diff --git a/src/auracast/auracast_config.py b/src/auracast/auracast_config.py
index b147ef0..56b14e7 100644
--- a/src/auracast/auracast_config.py
+++ b/src/auracast/auracast_config.py
@@ -60,7 +60,7 @@ class AuracastBigConfigDeu(AuracastBigConfig):
     random_address: str = 'F1:F1:F2:F3:F4:F5'
     name: str = 'Broadcast0'
     language: str ='deu'
-    program_info: str = 'Announcements German'
+    program_info: str = 'German'
     audio_source: str = 'file:./testdata/announcement_de.wav'
 
 class AuracastBigConfigEng(AuracastBigConfig):
@@ -68,7 +68,7 @@ class AuracastBigConfigEng(AuracastBigConfig):
     random_address: str = 'F2:F1:F2:F3:F4:F5'
     name: str  = 'Broadcast1'
     language: str ='eng'
-    program_info: str  = 'Announcements English'
+    program_info: str  = 'English'
     audio_source: str  = 'file:./testdata/announcement_en.wav'
 
 class AuracastBigConfigFra(AuracastBigConfig):
@@ -76,7 +76,7 @@ class AuracastBigConfigFra(AuracastBigConfig):
     random_address: str = 'F3:F1:F2:F3:F4:F5'
     name: str  = 'Broadcast2'
     language: str ='fra'
-    program_info: str  = 'Announcements French'
+    program_info: str  = 'French'
     audio_source: str  = 'file:./testdata/announcement_fr.wav'
 
 class AuracastBigConfigSpa(AuracastBigConfig):
@@ -84,7 +84,7 @@ class AuracastBigConfigSpa(AuracastBigConfig):
     random_address: str = 'F4:F1:F2:F3:F4:F5'
     name: str  = 'Broadcast3'
     language: str ='spa'
-    program_info: str  = 'Announcements Spanish'
+    program_info: str  = 'Spanish'
     audio_source: str  = 'file:./testdata/announcement_es.wav'
 
 class AuracastBigConfigIta(AuracastBigConfig):
@@ -92,7 +92,7 @@ class AuracastBigConfigIta(AuracastBigConfig):
     random_address: str = 'F5:F1:F2:F3:F4:F5'
     name: str  = 'Broadcast4'
     language: str ='ita'
-    program_info: str  = 'Announcements Italian'
+    program_info: str  = 'Italian'
     audio_source: str  = 'file:./testdata/announcement_it.wav'
 
 
diff --git a/src/auracast/multicast.py b/src/auracast/multicast.py
index 244d0fc..0bc8542 100644
--- a/src/auracast/multicast.py
+++ b/src/auracast/multicast.py
@@ -23,7 +23,7 @@ import logging
 import wave
 import itertools
 import struct
-from typing import cast, Any, AsyncGenerator, Coroutine, Dict, Optional, Tuple, List
+from typing import cast, Any, AsyncGenerator, Coroutine, List
 import itertools
 
 try:
@@ -502,31 +502,27 @@ if __name__ == "__main__":
     )
     os.chdir(os.path.dirname(__file__))
 
-    global_conf = auracast_config.AuracastGlobalConfig(
-        qos_config=auracast_config.AuracastQosHigh()
+
+    config = auracast_config.AuracastConfigGroup(
+        bigs = [
+            auracast_config.AuracastBigConfigDeu(),
+            #auracast_config.AuracastBigConfigEng(),
+            #auracast_config.AuracastBigConfigFra(),
+            #auracast_config.AuracastBigConfigEs(),
+            #auracast_config.AuracastBigConfigIt(),
+        ]
     )
 
+    # TODO: How can we use other iso interval than 10ms ?(medium or low rel) ? - nrf53audio receiver repports I2S tx underrun
+    config.qos_config=auracast_config.AuracastQosHigh()
+
     #global_conf.transport='serial:/dev/serial/by-id/usb-ZEPHYR_Zephyr_HCI_UART_sample_81BD14B8D71B5662-if00,1000000,rtscts' # transport for nrf52 dongle
-
     #global_conf.transport='serial:/dev/serial/by-id/usb-SEGGER_J-Link_001050076061-if02,1000000,rtscts' # transport for nrf53dk
-
     #global_conf.transport='serial:/dev/serial/by-id/usb-SEGGER_J-Link_001057705357-if02,1000000,rtscts' # transport for nrf54l15dk
-
-    global_conf.transport='serial:/dev/serial/by-id/usb-ZEPHYR_Zephyr_HCI_UART_sample_81BD14B8D71B5662-if00,115200,rtscts' #nrf52dongle hci_uart usb cdc
-
+    config.transport='serial:/dev/serial/by-id/usb-ZEPHYR_Zephyr_HCI_UART_sample_95A087EADB030B24-if00,115200,rtscts' #nrf52dongle hci_uart usb cdc
     # global_conf.transport='usb:2fe3:000b' #nrf52dongle hci_usb # TODO: iso packet over usb not supported
 
-
-    # TODO: How can we use other iso interval than 10ms ?(medium or low rel) ? - nrf53audio receiver repports I2S tx underrun
-
-    bigs = [
-        auracast_config.AuracastBigConfigDeu(),
-        auracast_config.AuracastBigConfigEng(),
-        auracast_config.AuracastBigConfigFra(),
-        #auracast_config.AuracastBigConfigEs(),
-        #auracast_config.AuracastBigConfigIt(),
-        ]
-    for big in bigs: # TODO: encrypted streams are not working
+    for big in config.bigs: # TODO: encrypted streams are not working
         #big.code = 'ff'*16 # returns hci/HCI_ENCRYPTION_MODE_NOT_ACCEPTABLE_ERROR
         #big.code = '78 e5 dc f1 34 ab 42 bf c1 92 ef dd 3a fd 67 ae'
         big.precode_wav = True
@@ -539,14 +535,15 @@ if __name__ == "__main__":
     # TODO: find the bottleneck - probably airtime
     # TODO: test encrypted streams
 
-    global_conf.auracast_sampling_rate_hz = 16000
-    global_conf.octets_per_frame = 40 # 32kbps@16kHz
-    #global_conf.debug = True
+    config.auracast_sampling_rate_hz = 16000
+    config.octets_per_frame = 40 # 32kbps@16kHz
+    #config.debug = True
+
 
     run_async(
         broadcast(
-            global_conf,
-            bigs
+            config,
+            config.bigs
         )
     )
 
diff --git a/src/auracast/multicast_server.py b/src/auracast/multicast_server.py
index f98273a..d63ed54 100644
--- a/src/auracast/multicast_server.py
+++ b/src/auracast/multicast_server.py
@@ -38,7 +38,7 @@ async def initialize(conf: auracast_config.AuracastConfigGroup):
         )
         multicaster = multicast_control.Multicaster(
             conf,
-            [big for big in conf.bigs],
+            conf.bigs,
         )
         await multicaster.init_broadcast()
     except Exception as e: