fix: resolve UI rework regressions in Dante/Analog/Network modes

- Remove undefined saved_r1_config/saved_r2_config variables in Dante mode TX power fields
- Fix quality_options used before assignment in USB/Network mode
- Fix Radio 2 input device reading from primary instead of secondary settings while streaming

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/auracast/server/multicast_frontend.py

@@ -71,6 +71,10 @@ if not is_pw_disabled():
         with st.form("signin_form"):
             pw = st.text_input("Password", type="password")
             submitted = st.form_submit_button("Sign in")
+        st.components.v1.html(
+            "<script>setTimeout(()=>window.parent.document.querySelector('input[type=\"password\"]')?.focus(),100)</script>",
+            height=0
+        )
         if submitted:
             if verify_password(pw, pw_rec):
                 st.session_state['frontend_authenticated'] = True
@@ -490,13 +494,43 @@ else:
                 disabled=is_streaming
             )
 
-            # Use analog-specific defaults (not from saved settings which may have Dante values)
-            default_name = "Analog_Radio_1"
-            default_program_info = "Analog Radio Broadcast"
-            default_lang = "deu"
-
             quality_options = list(QUALITY_MAP.keys())
-            default_quality = "Medium (24kHz)" if "Medium (24kHz)" in quality_options else quality_options[0]
+
+            # Use saved settings if audio_mode matches, otherwise use analog-specific defaults
+            saved_audio_mode = saved_settings.get('audio_mode')
+            if saved_audio_mode == 'Analog':
+                default_name = saved_settings.get('channel_names', ["Analog_Radio_1"])[0]
+                raw_program_info = saved_settings.get('program_info', default_name)
+                if isinstance(raw_program_info, list) and raw_program_info:
+                    default_program_info = raw_program_info[0]
+                else:
+                    default_program_info = raw_program_info
+                default_lang = saved_settings.get('languages', ["deu"])[0]
+
+                # Map saved sampling rate to quality label
+                saved_rate = saved_settings.get('auracast_sampling_rate_hz')
+                if saved_rate == 48000:
+                    default_quality = "High (48kHz)"
+                elif saved_rate == 32000:
+                    default_quality = "Good (32kHz)"
+                elif saved_rate == 24000:
+                    default_quality = "Medium (24kHz)"
+                elif saved_rate == 16000:
+                    default_quality = "Fair (16kHz)"
+                else:
+                    default_quality = "Medium (24kHz)"
+
+                saved_pwd = saved_settings.get('stream_password', '')
+            else:
+                # Use analog-specific defaults when switching from another mode
+                default_name = "Analog_Radio_1"
+                default_program_info = "Analog Radio Broadcast"
+                default_lang = "deu"
+                default_quality = "Medium (24kHz)" if "Medium (24kHz)" in quality_options else quality_options[0]
+                saved_pwd = ''
+
+            if default_quality not in quality_options:
+                default_quality = quality_options[0]
             quality1 = st.selectbox(
                 "Stream Quality (Radio 1)",
                 quality_options,
@@ -507,7 +541,7 @@ else:
 
             stream_passwort1 = st.text_input(
                 "Stream Passwort (Radio 1)",
-                value="",
+                value=saved_pwd,
                 type="password",
                 disabled=is_streaming,
                 help="Optional: Set a broadcast code for Radio 1."
@@ -621,7 +655,10 @@ else:
                             input_device1 = None
                     else:
                         # Mono mode: show all available channels
+                        saved_input_device = saved_settings.get('input_device')
                         default_r1_idx = 0
+                        if saved_input_device in analog_names:
+                            default_r1_idx = analog_names.index(saved_input_device)
                         input_device1 = st.selectbox(
                             "Input Device (Radio 1)",
                             analog_names,
@@ -670,22 +707,53 @@ else:
                 )
 
             if radio2_enabled and not stereo_enabled:
-                # Use analog-specific defaults for Radio 2
-                default_name_r2 = "Analog_Radio_2"
-                default_program_info_r2 = "Analog Radio Broadcast"
-                default_lang_r2 = "deu"
+                # Use saved settings if audio_mode matches, otherwise use analog-specific defaults for Radio 2
+                secondary_settings = saved_settings.get('secondary', {})
+                saved_audio_mode = saved_settings.get('audio_mode')
+                if saved_audio_mode == 'Analog' and secondary_settings:
+                    default_name_r2 = secondary_settings.get('channel_names', ["Analog_Radio_2"])[0] if isinstance(secondary_settings.get('channel_names'), list) else secondary_settings.get('channel_names', "Analog_Radio_2")
+                    raw_program_info_r2 = secondary_settings.get('program_info', default_name_r2)
+                    if isinstance(raw_program_info_r2, list) and raw_program_info_r2:
+                        default_program_info_r2 = raw_program_info_r2[0]
+                    else:
+                        default_program_info_r2 = raw_program_info_r2
+                    default_lang_r2 = secondary_settings.get('languages', ["deu"])[0] if isinstance(secondary_settings.get('languages'), list) else secondary_settings.get('languages', 'deu')
+                    
+                    # Map saved sampling rate to quality label
+                    saved_rate_r2 = secondary_settings.get('auracast_sampling_rate_hz')
+                    if saved_rate_r2 == 48000:
+                        default_quality_r2 = "High (48kHz)"
+                    elif saved_rate_r2 == 32000:
+                        default_quality_r2 = "Good (32kHz)"
+                    elif saved_rate_r2 == 24000:
+                        default_quality_r2 = "Medium (24kHz)"
+                    elif saved_rate_r2 == 16000:
+                        default_quality_r2 = "Fair (16kHz)"
+                    else:
+                        default_quality_r2 = "Medium (24kHz)"
+                    
+                    saved_pwd_r2 = secondary_settings.get('stream_password', '')
+                else:
+                    # Use analog-specific defaults when switching from another mode
+                    default_name_r2 = "Analog_Radio_2"
+                    default_program_info_r2 = "Analog Radio Broadcast"
+                    default_lang_r2 = "deu"
+                    default_quality_r2 = "Medium (24kHz)" if "Medium (24kHz)" in quality_options else quality_options[0]
+                    saved_pwd_r2 = ''
 
+                if default_quality_r2 not in quality_options:
+                    default_quality_r2 = quality_options[0]
                 quality2 = st.selectbox(
                     "Stream Quality (Radio 2)",
                     quality_options,
-                    index=quality_options.index(default_quality),
+                    index=quality_options.index(default_quality_r2),
                     disabled=is_streaming,
                     help="Select the audio sampling rate for Radio 2."
                 )
 
                 stream_passwort2 = st.text_input(
                     "Stream Passwort (Radio 2)",
-                    value="",
+                    value=saved_pwd_r2,
                     type="password",
                     disabled=is_streaming,
                     help="Optional: Set a broadcast code for Radio 2."
@@ -753,7 +821,11 @@ else:
 
                 if not is_streaming:
                     if analog_names:
+                        secondary_settings = saved_settings.get('secondary', {})
+                        saved_input_device2 = secondary_settings.get('input_device')
                         default_r2_idx = 1 if len(analog_names) > 1 else 0
+                        if saved_input_device2 in analog_names:
+                            default_r2_idx = analog_names.index(saved_input_device2)
                         input_device2 = st.selectbox(
                             "Input Device (Radio 2)",
                             analog_names,
@@ -763,7 +835,7 @@ else:
                     else:
                         input_device2 = None
                 else:
-                    input_device2 = saved_settings.get('input_device')
+                    input_device2 = saved_settings.get('secondary', {}).get('input_device')
                     st.selectbox(
                         "Input Device (Radio 2)",
                         [input_device2 or "No device selected"],
@@ -847,10 +919,15 @@ else:
             )
             
             # Dante stereo mode toggle
-            saved_r1_config = saved_settings.get('dante_radio1', {})
+            saved_audio_mode = saved_settings.get('audio_mode')
+            dante_stereo_enabled = False
+            if saved_audio_mode == 'Network - Dante':
+                # Check if any input device starts with dante_stereo_ to detect stereo mode
+                input_device = saved_settings.get('input_device', '')
+                dante_stereo_enabled = input_device.startswith('dante_stereo_')
             dante_stereo_enabled = st.checkbox(
                 "🎧 Stereo Mode",
-                value=bool(saved_r1_config.get('dante_stereo_mode', False)),
+                value=dante_stereo_enabled,
                 help="Enable stereo streaming for Dante inputs. Select left and right channels from ASRC channels 1-6. Radio 2 and multi-stream configurations will be disabled in stereo mode.",
                 disabled=is_streaming
             )
@@ -859,13 +936,23 @@ else:
             dante_left_channel = None
             dante_right_channel = None
             if dante_stereo_enabled:
-                dante_channel_options = ["dante_asrc_ch1", "dante_asrc_ch2", "dante_asrc_ch3", 
+                dante_channel_options = ["dante_asrc_ch1", "dante_asrc_ch2", "dante_asrc_ch3",
                                          "dante_asrc_ch4", "dante_asrc_ch5", "dante_asrc_ch6"]
                 dante_channel_labels = ["CH1", "CH2", "CH3", "CH4", "CH5", "CH6"]
-                
+
+                # Parse saved stereo device name to extract left and right channels
+                input_device = saved_settings.get('input_device', '')
+                saved_left = 'dante_asrc_ch1'
+                saved_right = 'dante_asrc_ch2'
+                if input_device.startswith('dante_stereo_'):
+                    # Format: dante_stereo_<left>_<right>
+                    parts = input_device.split('_')
+                    if len(parts) >= 4:
+                        saved_left = f"dante_asrc_ch{parts[2]}"
+                        saved_right = f"dante_asrc_ch{parts[3]}"
+
                 col_left, col_right = st.columns(2)
                 with col_left:
-                    saved_left = saved_r1_config.get('dante_stereo_left', 'dante_asrc_ch1')
                     left_idx = dante_channel_options.index(saved_left) if saved_left in dante_channel_options else 0
                     dante_left_channel = st.selectbox(
                         "Left Channel",
@@ -876,7 +963,6 @@ else:
                         help="Select the Dante ASRC channel for the left stereo channel"
                     )
                 with col_right:
-                    saved_right = saved_r1_config.get('dante_stereo_right', 'dante_asrc_ch2')
                     right_idx = dante_channel_options.index(saved_right) if saved_right in dante_channel_options else 1
                     dante_right_channel = st.selectbox(
                         "Right Channel",
@@ -886,7 +972,7 @@ else:
                         disabled=is_streaming,
                         help="Select the Dante ASRC channel for the right stereo channel"
                     )
-                
+
                 if dante_left_channel == dante_right_channel:
                     st.warning("⚠️ Left and right channels are the same. Select different channels for true stereo.")
                 else:
@@ -894,7 +980,22 @@ else:
             
             # Stream count dropdown for Radio 1 (disabled in stereo mode - forced to 1 stream at 48kHz)
             r1_stream_options = list(dante_stream_options.keys())
-            saved_r1_streams = saved_r1_config.get('stream_config', '1x48')
+            # Infer stream configuration from saved sampling rate
+            saved_rate = saved_settings.get('auracast_sampling_rate_hz')
+            saved_r1_streams = '1 × 48kHz'  # default
+            if saved_rate:
+                if saved_rate == 48000:
+                    channel_names = saved_settings.get('channel_names', [])
+                    if len(channel_names) == 2:
+                        saved_r1_streams = '2 × 24kHz'
+                    elif len(channel_names) == 3:
+                        saved_r1_streams = '3 × 16kHz'
+                    else:
+                        saved_r1_streams = '1 × 48kHz'
+                elif saved_rate == 24000:
+                    saved_r1_streams = '2 × 24kHz'
+                elif saved_rate == 16000:
+                    saved_r1_streams = '3 × 16kHz'
             default_r1_idx = r1_stream_options.index(saved_r1_streams) if saved_r1_streams in r1_stream_options else 0
             
             if dante_stereo_enabled:
@@ -924,15 +1025,25 @@ else:
             r1_available_qualities = []
             for quality in ["High (48kHz)", "Good (32kHz)", "Medium (24kHz)", "Fair (16kHz)"]:
                 # Check if this quality is equal to or lower than the max
-                if (r1_max_quality == "High (48kHz)" or 
+                if (r1_max_quality == "High (48kHz)" or
                     (r1_max_quality == "Medium (24kHz)" and quality in ["Medium (24kHz)", "Fair (16kHz)"]) or
                     (r1_max_quality == "Fair (16kHz)" and quality == "Fair (16kHz)")):
                     r1_available_qualities.append(quality)
-            
-            saved_r1_quality = saved_r1_config.get('radio_quality', r1_max_quality)
+
+            # Map saved sampling rate to quality label
+            saved_r1_quality = r1_max_quality
+            saved_rate = saved_settings.get('auracast_sampling_rate_hz')
+            if saved_rate == 48000:
+                saved_r1_quality = "High (48kHz)"
+            elif saved_rate == 32000:
+                saved_r1_quality = "Good (32kHz)"
+            elif saved_rate == 24000:
+                saved_r1_quality = "Medium (24kHz)"
+            elif saved_rate == 16000:
+                saved_r1_quality = "Fair (16kHz)"
             if saved_r1_quality not in r1_available_qualities:
                 saved_r1_quality = r1_max_quality
-            
+
             r1_radio_quality = st.selectbox(
                 "Stream Quality (Radio 1)",
                 r1_available_qualities,
@@ -940,29 +1051,29 @@ else:
                 disabled=is_streaming,
                 help=f"Select stream quality for Radio 1. Maximum quality based on configuration: {r1_max_quality}"
             )
-            
+
             # Radio-level settings for Radio 1
             # First row: Assistive listening, immediate rendering, presentation delay, QoS
             col_r1_flags1, col_r1_flags2, col_r1_pdelay, col_r1_qos = st.columns([1, 1, 0.7, 0.6], gap="small")
-            
+
             with col_r1_flags1:
                 r1_assisted_listening = st.checkbox(
                     "Assistive (R1)",
-                    value=bool(saved_r1_config.get('assisted_listening', False)),
+                    value=bool(saved_settings.get('assisted_listening_stream', False)),
                     disabled=is_streaming,
                     help="Assistive listening stream"
                 )
-            
+
             with col_r1_flags2:
                 r1_immediate_rendering = st.checkbox(
                     "Immediate (R1)",
-                    value=bool(saved_r1_config.get('immediate_rendering', False)),
+                    value=bool(saved_settings.get('immediate_rendering', False)),
                     disabled=is_streaming,
                     help="Ignore presentation delay"
                 )
             
             with col_r1_pdelay:
-                default_pdelay = int(saved_r1_config.get('presentation_delay_us', 40000) or 40000)
+                default_pdelay = int(saved_settings.get('presentation_delay_us', 40000) or 40000)
                 default_pdelay_ms = max(10, min(200, default_pdelay // 1000))
                 r1_presentation_delay_ms = st.number_input(
                     "Delay (ms, R1)",
@@ -970,10 +1081,10 @@ else:
                     disabled=is_streaming,
                     help="Presentation delay for Radio 1"
                 )
-            
+
             with col_r1_qos:
                 qos_options = list(QOS_PRESET_MAP.keys())
-                saved_qos = saved_r1_config.get('qos_preset', 'Fast')
+                saved_qos = saved_settings.get('qos_preset', 'Fast')
                 default_qos_idx = qos_options.index(saved_qos) if saved_qos in qos_options else 0
                 r1_qos_preset = st.selectbox(
                     "QoS (R1)", options=qos_options, index=default_qos_idx,
@@ -984,7 +1095,7 @@ else:
             r1_tx_power = _tx_power_selectbox(
                 "TX Power (R1)",
                 key="dante_tx_power_r1",
-                default=saved_r1_config.get('advertising_tx_power', saved_settings.get('advertising_tx_power', TX_POWER_DEFAULT)),
+                default=saved_settings.get('advertising_tx_power', TX_POWER_DEFAULT),
                 disabled=is_streaming,
             )
 
@@ -998,24 +1109,31 @@ else:
             if dante_stereo_enabled:
                 # Stereo mode: single stream with combined L+R channels
                 with st.expander("Stereo Stream - Radio 1", expanded=True):
-                    saved_streams = saved_r1_config.get('streams', [])
-                    saved_stream = saved_streams[0] if saved_streams else {}
-                    
+                    # Read from flat settings structure
+                    channel_names = saved_settings.get('channel_names', [])
+                    program_infos = saved_settings.get('program_info', [])
+                    languages = saved_settings.get('languages', [])
+
+                    saved_name = channel_names[0] if channel_names else 'Dante_Stereo'
+                    saved_program_info = program_infos[0] if program_infos else saved_name
+                    saved_language = languages[0] if languages else 'eng'
+                    saved_password = saved_settings.get('stream_password', '')
+
                     # First row: Channel name and password
                     col_name, col_pwd = st.columns([2, 1])
-                    
+
                     with col_name:
                         stream_name = st.text_input(
                             "Channel Name",
-                            value=saved_stream.get('name', 'Dante_Stereo'),
+                            value=saved_name,
                             disabled=is_streaming,
                             key="r1_stereo_name"
                         )
-                    
+
                     with col_pwd:
                         stream_password = st.text_input(
                             "Stream Password",
-                            value=saved_stream.get('stream_password', ''),
+                            value=saved_password,
                             type="password",
                             disabled=is_streaming,
                             key="r1_stereo_password",
@@ -1024,19 +1142,19 @@ else:
                     
                     # Second row: Program info and language
                     col_prog, col_lang_code = st.columns([2, 1])
-                    
+
                     with col_prog:
                         program_info = st.text_input(
                             "Program Info",
-                            value=saved_stream.get('program_info', 'Dante Stereo Broadcast'),
+                            value=saved_program_info,
                             disabled=is_streaming,
                             key="r1_stereo_program"
                         )
-                    
+
                     with col_lang_code:
                         language = st.text_input(
                             "Language",
-                            value=saved_stream.get('language', 'eng'),
+                            value=saved_language,
                             disabled=is_streaming,
                             key="r1_stereo_lang",
                             help="ISO 639-3 language code"
@@ -1070,47 +1188,58 @@ else:
                     })
             else:
                 # Normal mono mode: multiple streams with individual channels
+                # Read from flat settings structure
+                channel_names = saved_settings.get('channel_names', [])
+                program_infos = saved_settings.get('program_info', [])
+                languages = saved_settings.get('languages', [])
+                input_devices = saved_settings.get('input_devices', [])
+                stream_passwords = saved_settings.get('stream_passwords', []) if 'stream_passwords' in saved_settings else []
+
                 for i in range(r1_num_streams):
                     with st.expander(f"Stream {i+1} - Radio 1", expanded=True):
-                        saved_streams = saved_r1_config.get('streams', [])
-                        saved_stream = saved_streams[i] if i < len(saved_streams) else {}
-                        
+                        # Get saved values from flat structure
+                        saved_name = channel_names[i] if i < len(channel_names) else f'Dante_R1_S{i+1}'
+                        saved_program_info = program_infos[i] if i < len(program_infos) else f'Dante Radio 1 Stream {i+1}'
+                        saved_language = languages[i] if i < len(languages) else 'eng'
+                        saved_password = stream_passwords[i] if i < len(stream_passwords) else ''
+                        saved_input_device = input_devices[i] if i < len(input_devices) else None
+
                         # First row: Channel name and language
                         col_name, col_lang = st.columns([2, 1])
-                        
+
                         with col_name:
                             stream_name = st.text_input(
                                 f"Channel Name",
-                                value=saved_stream.get('name', f'Dante_R1_S{i+1}'),
+                                value=saved_name,
                                 disabled=is_streaming,
                                 key=f"r1_stream_{i}_name"
                             )
-                        
+
                         with col_lang:
                             stream_password = st.text_input(
                                 f"Stream Password",
-                                value=saved_stream.get('stream_password', ''),
+                                value=saved_password,
                                 type="password",
                                 disabled=is_streaming,
                                 key=f"r1_stream_{i}_password",
                                 help="Optional: Set a broadcast code for this stream"
                             )
-                        
+
                         # Second row: Program info and language
                         col_prog, col_lang_code = st.columns([2, 1])
-                        
+
                         with col_prog:
                             program_info = st.text_input(
                                 f"Program Info",
-                                value=saved_stream.get('program_info', f'Dante Radio 1 Stream {i+1}'),
+                                value=saved_program_info,
                                 disabled=is_streaming,
                                 key=f"r1_stream_{i}_program"
                             )
-                        
+
                         with col_lang_code:
                             language = st.text_input(
                                 f"Language",
-                                value=saved_stream.get('language', 'eng'),
+                                value=saved_language,
                                 disabled=is_streaming,
                                 key=f"r1_stream_{i}_lang",
                                 help="ISO 639-3 language code"
@@ -1122,10 +1251,10 @@ else:
                         with col_device:
                             # Session state key for persisting the selection
                             device_session_key = f"r1_stream_{i}_device_saved"
-                            
+
                             if not is_streaming and input_options:
                                 # Get default from session state first, then from saved settings
-                                default_input_name = st.session_state.get(device_session_key, saved_stream.get('input_device'))
+                                default_input_name = st.session_state.get(device_session_key, saved_input_device)
                                 default_input_label = None
                                 for label, name in option_name_map.items():
                                     if name == default_input_name:
@@ -1133,7 +1262,7 @@ else:
                                         break
                                 if default_input_label not in input_options and input_options:
                                     default_input_label = input_options[0]
-                                
+
                                 selected_option = st.selectbox(
                                     f"Input Device",
                                     input_options,
@@ -1146,7 +1275,7 @@ else:
                                 st.session_state[device_session_key] = input_device
                             else:
                                 # When streaming, get the device from session state
-                                current_device = st.session_state.get(device_session_key, saved_stream.get('input_device', 'No device'))
+                                current_device = st.session_state.get(device_session_key, saved_input_device or 'No device')
                                 
                                 # Convert internal name to display label
                                 display_label = current_device
@@ -1175,26 +1304,45 @@ else:
         # --- Radio 2 Section ---
         with st.container(border=True):
             st.subheader("Radio 2")
-            
+
             # Disable Radio 2 in stereo mode
-            saved_r2_config = saved_settings.get('dante_radio2', {})
+            secondary_settings = saved_settings.get('secondary', {})
             if dante_stereo_enabled:
                 st.info("🎧 Radio 2 is automatically disabled in stereo mode")
                 radio2_enabled = False
             else:
                 # Enable/disable checkbox for Radio 2
+                # Use saved settings or streaming state to determine default
                 radio2_enabled_default = secondary_is_streaming
+                # Check if secondary radio has saved settings (indicates it was enabled)
+                if secondary_settings.get('auracast_sampling_rate_hz') or secondary_settings.get('channel_names'):
+                    radio2_enabled_default = True
                 radio2_enabled = st.checkbox(
                     "Enable Radio 2",
                     value=radio2_enabled_default,
                     disabled=is_streaming,
                     help="Activate a second Dante radio with its own quality and timing settings."
                 )
-            
+
             if radio2_enabled:
                 # Stream count dropdown for Radio 2
                 r2_stream_options = r1_stream_options
-                saved_r2_streams = saved_r2_config.get('stream_config', '1x48')
+                # Infer stream configuration from saved secondary sampling rate
+                saved_rate2 = secondary_settings.get('auracast_sampling_rate_hz')
+                saved_r2_streams = '1 × 48kHz'  # default
+                if saved_rate2:
+                    if saved_rate2 == 48000:
+                        channel_names2 = secondary_settings.get('channel_names', [])
+                        if len(channel_names2) == 2:
+                            saved_r2_streams = '2 × 24kHz'
+                        elif len(channel_names2) == 3:
+                            saved_r2_streams = '3 × 16kHz'
+                        else:
+                            saved_r2_streams = '1 × 48kHz'
+                    elif saved_rate2 == 24000:
+                        saved_r2_streams = '2 × 24kHz'
+                    elif saved_rate2 == 16000:
+                        saved_r2_streams = '3 × 16kHz'
                 default_r2_idx = r2_stream_options.index(saved_r2_streams) if saved_r2_streams in r2_stream_options else 0
                 
                 r2_stream_config = st.selectbox(
@@ -1216,11 +1364,20 @@ else:
                         (r2_max_quality == "Medium (24kHz)" and quality in ["Medium (24kHz)", "Fair (16kHz)"]) or
                         (r2_max_quality == "Fair (16kHz)" and quality == "Fair (16kHz)")):
                         r2_available_qualities.append(quality)
-                
-                saved_r2_quality = saved_r2_config.get('radio_quality', r2_max_quality)
+
+                # Map saved secondary sampling rate to quality label
+                saved_r2_quality = r2_max_quality
+                if saved_rate2 == 48000:
+                    saved_r2_quality = "High (48kHz)"
+                elif saved_rate2 == 32000:
+                    saved_r2_quality = "Good (32kHz)"
+                elif saved_rate2 == 24000:
+                    saved_r2_quality = "Medium (24kHz)"
+                elif saved_rate2 == 16000:
+                    saved_r2_quality = "Fair (16kHz)"
                 if saved_r2_quality not in r2_available_qualities:
                     saved_r2_quality = r2_max_quality
-                
+
                 r2_radio_quality = st.selectbox(
                     "Stream Quality (Radio 2)",
                     r2_available_qualities,
@@ -1228,29 +1385,28 @@ else:
                     disabled=is_streaming,
                     help=f"Select stream quality for Radio 2. Maximum quality based on configuration: {r2_max_quality}"
                 )
-                
+
                 # Radio-level settings for Radio 2
-                # First row: Assistive listening, immediate rendering, presentation delay, QoS
                 col_r2_flags1, col_r2_flags2, col_r2_pdelay, col_r2_qos = st.columns([1, 1, 0.7, 0.6], gap="small")
-                
+
                 with col_r2_flags1:
                     r2_assisted_listening = st.checkbox(
                         "Assistive (R2)",
-                        value=bool(saved_r2_config.get('assisted_listening', False)),
+                        value=bool(secondary_settings.get('assisted_listening_stream', False)),
                         disabled=is_streaming,
                         help="Assistive listening stream"
                     )
-                
+
                 with col_r2_flags2:
                     r2_immediate_rendering = st.checkbox(
                         "Immediate (R2)",
-                        value=bool(saved_r2_config.get('immediate_rendering', False)),
+                        value=bool(secondary_settings.get('immediate_rendering', False)),
                         disabled=is_streaming,
                         help="Ignore presentation delay"
                     )
-                
+
                 with col_r2_pdelay:
-                    default_pdelay = int(saved_r2_config.get('presentation_delay_us', 40000) or 40000)
+                    default_pdelay = int(secondary_settings.get('presentation_delay_us', 40000) or 40000)
                     default_pdelay_ms = max(10, min(200, default_pdelay // 1000))
                     r2_presentation_delay_ms = st.number_input(
                         "Delay (ms, R2)",
@@ -1258,13 +1414,13 @@ else:
                         disabled=is_streaming,
                         help="Presentation delay for Radio 2"
                     )
-                
+
                 with col_r2_qos:
                     qos_options = list(QOS_PRESET_MAP.keys())
-                    saved_qos = saved_r2_config.get('qos_preset', 'Fast')
-                    default_qos_idx = qos_options.index(saved_qos) if saved_qos in qos_options else 0
+                    saved_qos = secondary_settings.get('qos_preset', 'Fast')
+                    default_qos_idx2 = qos_options.index(saved_qos) if saved_qos in qos_options else 0
                     r2_qos_preset = st.selectbox(
-                        "QoS (R2)", options=qos_options, index=default_qos_idx,
+                        "QoS (R2)", options=qos_options, index=default_qos_idx2,
                         disabled=is_streaming,
                         help="Quality of Service preset for Radio 2"
                     )
@@ -1272,55 +1428,66 @@ else:
                 r2_tx_power = _tx_power_selectbox(
                     "TX Power (R2)",
                     key="dante_tx_power_r2",
-                    default=saved_r2_config.get('advertising_tx_power', saved_settings.get('secondary', {}).get('advertising_tx_power', TX_POWER_DEFAULT)),
+                    default=saved_settings.get('secondary', {}).get('advertising_tx_power', TX_POWER_DEFAULT),
                     disabled=is_streaming,
                 )
 
                 # Per-stream configuration for Radio 2
                 st.write("**Stream Configuration (Radio 2)**")
                 r2_streams = []
-                
+
+                # Read from flat secondary settings structure
+                channel_names2 = secondary_settings.get('channel_names', [])
+                program_infos2 = secondary_settings.get('program_info', [])
+                languages2 = secondary_settings.get('languages', [])
+                input_devices2 = secondary_settings.get('input_devices', [])
+                stream_passwords2 = secondary_settings.get('stream_passwords', []) if 'stream_passwords' in secondary_settings else []
+
                 for i in range(r2_num_streams):
                     with st.expander(f"Stream {i+1} - Radio 2", expanded=True):
-                        saved_streams = saved_r2_config.get('streams', [])
-                        saved_stream = saved_streams[i] if i < len(saved_streams) else {}
+                        # Get saved values from flat secondary structure
+                        saved_name2 = channel_names2[i] if i < len(channel_names2) else f'Dante_R2_S{i+1}'
+                        saved_program_info2 = program_infos2[i] if i < len(program_infos2) else f'Dante Radio 2 Stream {i+1}'
+                        saved_language2 = languages2[i] if i < len(languages2) else 'eng'
+                        saved_password2 = stream_passwords2[i] if i < len(stream_passwords2) else ''
+                        saved_input_device2 = input_devices2[i] if i < len(input_devices2) else None
 
                         # First row: Channel name and password
                         col_name, col_pwd = st.columns([2, 1])
-                        
+
                         with col_name:
                             stream_name = st.text_input(
                                 f"Channel Name",
-                                value=saved_stream.get('name', f'Dante_R2_S{i+1}'),
+                                value=saved_name2,
                                 disabled=is_streaming,
                                 key=f"r2_stream_{i}_name"
                             )
-                        
+
                         with col_pwd:
                             stream_password = st.text_input(
                                 f"Stream Password",
-                                value=saved_stream.get('stream_password', ''),
+                                value=saved_password2,
                                 type="password",
                                 disabled=is_streaming,
                                 key=f"r2_stream_{i}_password",
                                 help="Optional: Set a broadcast code for this stream"
                             )
-                        
+
                         # Second row: Program info and language
                         col_prog, col_lang = st.columns([2, 1])
-                        
+
                         with col_prog:
                             program_info = st.text_input(
                                 f"Program Info",
-                                value=saved_stream.get('program_info', f'Dante Radio 2 Stream {i+1}'),
+                                value=saved_program_info2,
                                 disabled=is_streaming,
                                 key=f"r2_stream_{i}_program"
                             )
-                        
+
                         with col_lang:
                             language = st.text_input(
                                 f"Language",
-                                value=saved_stream.get('language', 'eng'),
+                                value=saved_language2,
                                 disabled=is_streaming,
                                 key=f"r2_stream_{i}_lang",
                                 help="ISO 639-3 language code"
@@ -1332,10 +1499,10 @@ else:
                         with col_device:
                             # Session state key for persisting the selection
                             device_session_key = f"r2_stream_{i}_device_saved"
-                            
+
                             if not is_streaming and input_options:
                                 # Get default from session state first, then from saved settings
-                                default_input_name = st.session_state.get(device_session_key, saved_stream.get('input_device'))
+                                default_input_name = st.session_state.get(device_session_key, saved_input_device2)
                                 default_input_label = None
                                 for label, name in option_name_map.items():
                                     if name == default_input_name:
@@ -1343,7 +1510,7 @@ else:
                                         break
                                 if default_input_label not in input_options and input_options:
                                     default_input_label = input_options[0]
-                                
+
                                 selected_option = st.selectbox(
                                     f"Input Device",
                                     input_options,
@@ -1356,7 +1523,7 @@ else:
                                 st.session_state[device_session_key] = input_device
                             else:
                                 # When streaming, get the device from session state
-                                current_device = st.session_state.get(device_session_key, saved_stream.get('input_device', 'No device'))
+                                current_device = st.session_state.get(device_session_key, saved_input_device2 or 'No device')
                                 
                                 # Convert internal name to display label
                                 display_label = current_device
@@ -1444,8 +1611,29 @@ else:
         
     if audio_mode in ("USB", "Network"):
         # USB/Network: single set of controls shared with the single channel
+        # Use saved settings if audio_mode matches, otherwise use defaults
         quality_options = list(QUALITY_MAP.keys())
-        default_quality = "Medium (24kHz)" if "Medium (24kHz)" in quality_options else quality_options[0]
+        saved_audio_mode = saved_settings.get('audio_mode')
+        if saved_audio_mode in ("USB", "Network"):
+            # Map saved sampling rate to quality label
+            saved_rate = saved_settings.get('auracast_sampling_rate_hz')
+            if saved_rate == 48000:
+                default_quality = "High (48kHz)"
+            elif saved_rate == 32000:
+                default_quality = "Good (32kHz)"
+            elif saved_rate == 24000:
+                default_quality = "Medium (24kHz)"
+            elif saved_rate == 16000:
+                default_quality = "Fair (16kHz)"
+            else:
+                default_quality = "Medium (24kHz)"
+            saved_pwd = saved_settings.get('stream_password', '')
+        else:
+            # Use defaults when switching from another mode
+            default_quality = "Medium (24kHz)" if "Medium (24kHz)" in quality_options else quality_options[0]
+            saved_pwd = ''
+        if default_quality not in quality_options:
+            default_quality = quality_options[0]
         quality = st.selectbox(
             "Stream Quality (Sampling Rate)",
             quality_options,
@@ -1456,7 +1644,7 @@ else:
 
         stream_passwort = st.text_input(
             "Stream Passwort",
-            value="",
+            value=saved_pwd,
             type="password",
             disabled=is_streaming,
             help="Optional: Set a broadcast code to protect your stream. Leave empty for an open (uncoded) broadcast."
@@ -1728,7 +1916,7 @@ if start_stream:
                 analog_gain_db_right=cfg.get('analog_gain_db_right', 0.0),
                 bigs=[
                     auracast_config.AuracastBigConfig(
-                        code=(cfg['stream_passwort'].strip() or None),
+                        code=((cfg['stream_passwort'] or '').strip() or None),
                         name=cfg['name'],
                         program_info=cfg['program_info'],
                         language=cfg['language'],

src/auracast/server/multicast_server.py

@@ -445,6 +445,11 @@ async def init_radio(transport: str, conf: auracast_config.AuracastConfigGroup,
         first_source = conf.bigs[0].audio_source if conf.bigs else ''
         input_device_name = None
         audio_mode_persist = 'Demo'
+        # Capture original per-BIG device names before transformation
+        original_input_devices = [
+            big.audio_source.split(':', 1)[1] if (isinstance(big.audio_source, str) and big.audio_source.startswith('device:')) else None
+            for big in conf.bigs
+        ]
         if any(isinstance(b.audio_source, str) and b.audio_source.startswith('device:') for b in conf.bigs):
             if isinstance(first_source, str) and first_source.startswith('device:'):
                 input_device_name = first_source.split(':', 1)[1] if ':' in first_source else None
@@ -604,6 +609,7 @@ async def init_radio(transport: str, conf: auracast_config.AuracastConfigGroup,
             'languages': [big.language for big in conf.bigs],
             'audio_mode': audio_mode_persist,
             'input_device': input_device_name,
+            'input_devices': original_input_devices,
             'program_info': [getattr(big, 'program_info', None) for big in conf.bigs],
             'gain': [getattr(big, 'input_gain', 1.0) for big in conf.bigs],
             'auracast_sampling_rate_hz': conf.auracast_sampling_rate_hz,

src/service/10-link-local-mgmt

@@ -5,6 +5,8 @@
 # using nmcli device modify (active session only, NOT saved to the profile).
 # The persistent profile always keeps ipv4.link-local=enabled so that
 # direct-connect (no DHCP) plug-ins always activate and trigger events.
+# Avahi is reloaded on each event — no /etc/avahi/hosts file, avahi uses
+# natural per-interface advertisement so each segment gets the right IP.
 #
 # Triggers: up, down, dhcp4-change on ethernet interfaces
 # Install to: /etc/NetworkManager/dispatcher.d/10-link-local-mgmt
@@ -12,47 +14,31 @@
 
 INTERFACE="$1"
 ACTION="$2"
-CONNECTION_NAME="${CONNECTION_ID:-}"
-
 # Only handle ethernet interfaces
 if [[ ! "$INTERFACE" =~ ^eth ]]; then
     exit 0
 fi
 
-# If CONNECTION_ID env var is not set, look up the active connection for this interface
-if [ -z "$CONNECTION_NAME" ]; then
-    CONNECTION_NAME=$(nmcli -t -f NAME,DEVICE connection show --active 2>/dev/null \
-        | grep ":${INTERFACE}$" | cut -d: -f1 | head -n1)
-    [ -z "$CONNECTION_NAME" ] && exit 0
-fi
-
-# Update /etc/avahi/hosts to point mDNS hostname at the best available DHCP address
-# across all ethernet interfaces (so Avahi doesn't advertise a link-local address).
-update_avahi() {
-    local hostname
-    hostname=$(hostname)
-    # Find first non-link-local IPv4 across all ethernet interfaces
-    local dhcp_ip
-    dhcp_ip=$(ip -4 addr show 2>/dev/null \
-        | grep -A5 ': eth' \
-        | grep -oP '(?<=inet\s)\d+(\.\d+){3}' \
-        | grep -v '^127\.' \
-        | grep -v '^169\.254\.' \
-        | head -n1)
-
-    if [ -n "$dhcp_ip" ]; then
-        mkdir -p /etc/avahi
-        echo "$dhcp_ip $hostname $hostname.local" > /etc/avahi/hosts
-        logger -t nm-link-local "Avahi: pinned $hostname -> $dhcp_ip"
-    else
-        rm -f /etc/avahi/hosts
-        logger -t nm-link-local "Avahi: removed hosts pin, using all addresses"
-    fi
-    systemctl restart avahi-daemon 2>/dev/null
+reload_avahi() {
+    systemctl reload avahi-daemon 2>/dev/null || systemctl restart avahi-daemon 2>/dev/null
+    logger -t nm-link-local "[$INTERFACE] $ACTION — avahi reloaded"
 }
 
 case "$ACTION" in
-    up|dhcp4-change)
+    up)
+        # On 'up' the interface may still carry a stale DHCP address from the previous
+        # session (NM hasn't cleaned it up yet). Reading ip-addr here is unreliable.
+        # Always re-enable link-local as a clean slate; let dhcp4-change suppress it
+        # later if a real DHCP lease is obtained.
+        logger -t nm-link-local "[$INTERFACE] Up — ensuring link-local active (clean slate)"
+        (sleep 2 && nmcli device modify "$INTERFACE" ipv4.link-local enabled 2>/dev/null \
+            && logger -t nm-link-local "[$INTERFACE] Link-local explicitly enabled on up") &
+        reload_avahi
+        ;;
+
+    dhcp4-change)
+        # dhcp4-change fires only when DHCP actually succeeds (new/renewed lease).
+        # At this point the DHCP IP is reliably present — safe to read and suppress link-local.
         DHCP_IP=$(ip -4 addr show "$INTERFACE" 2>/dev/null \
             | grep -oP '(?<=inet\s)\d+(\.\d+){3}' \
             | grep -v '^127\.' \
@@ -60,24 +46,19 @@ case "$ACTION" in
             | head -n1)
 
         if [ -n "$DHCP_IP" ]; then
-            logger -t nm-link-local "[$INTERFACE] DHCP $DHCP_IP detected — suppressing link-local (session only)"
-            # Use device modify (not connection modify) so the persistent profile keeps
-            # ipv4.link-local=enabled. This ensures direct-connect plug-ins always activate.
+            logger -t nm-link-local "[$INTERFACE] DHCP $DHCP_IP confirmed — suppressing link-local (session only)"
             # Run in background after a delay — nmcli blocks on NM, which is waiting for
             # this dispatcher to return, causing a deadlock if called synchronously.
             (sleep 2 && nmcli device modify "$INTERFACE" ipv4.link-local disabled 2>/dev/null \
                 && logger -t nm-link-local "[$INTERFACE] Link-local suppressed for current session") &
-        else
-            logger -t nm-link-local "[$INTERFACE] No DHCP on $INTERFACE — keeping link-local active"
         fi
-        update_avahi
+        reload_avahi
         ;;
 
     down)
-        # Profile always has ipv4.link-local=enabled so no action needed here.
-        # The suppression from device modify was session-only and is gone when the
-        # connection goes down.
-        logger -t nm-link-local "[$INTERFACE] Down — link-local will be active on next connect"
-        update_avahi
+        # NOTE: a carrier-change does NOT fully reset session-level 'device modify' state.
+        # The re-enable is therefore handled in the 'up' handler when no DHCP is detected.
+        logger -t nm-link-local "[$INTERFACE] Down — link-local will be re-enabled on next up without DHCP"
+        reload_avahi
         ;;
 esac

src/service/update_and_run_server_and_frontend.sh

@@ -8,13 +8,28 @@ set -e
 # Enable link-local for all wired ethernet connections
 while IFS=: read -r name type; do
     if [[ "$type" == *"ethernet"* ]]; then
-        echo "Enabling IPv4 link-local for connection: $name"
+        echo "Configuring connection: $name"
+        # link-local: always enabled so direct-connect (no DHCP) works immediately
         sudo nmcli connection modify "$name" ipv4.link-local enabled 2>/dev/null || echo "Failed to modify $name"
+        # may-fail=yes: do NOT tear down the connection when DHCP times out.
+        # Without this, NM declares ip-config-unavailable after the 45s DHCP timeout
+        # and enters a reconnect loop that causes ~1.5 min outages every ~45 seconds.
+        sudo nmcli connection modify "$name" ipv4.may-fail yes 2>/dev/null || echo "Failed to set may-fail on $name"
+        # Infinite DHCP timeout: NM keeps retrying DHCP in the background but never
+        # declares ip-config-unavailable. This prevents the 45s reconnect loop that
+        # kills the link-local address in direct-connect (no DHCP server) scenarios.
+        sudo nmcli connection modify "$name" ipv4.dhcp-timeout infinity 2>/dev/null || echo "Failed to set dhcp-timeout on $name"
         sudo nmcli connection up "$name" 2>/dev/null || echo "Failed to bring up $name"
     fi
 done < <(nmcli -t -f NAME,TYPE connection show)
 
 
+# Remove stale avahi hosts pin — this file overrides per-interface advertisement
+# and causes mDNS to always resolve to eth0's IP regardless of which interface
+# the query arrived on, breaking eth1 mDNS entirely.
+sudo rm -f /etc/avahi/hosts
+sudo systemctl restart avahi-daemon
+
 # Ensure Loopback is loaded with a fixed name and index 
 # Needed for dante
 # TODO image when we create the next image this should be part of it