diff --git a/src/auracast/auracast_config.py b/src/auracast/auracast_config.py
index aa8de68..9dc0e88 100644
--- a/src/auracast/auracast_config.py
+++ b/src/auracast/auracast_config.py
@@ -61,7 +61,7 @@ class AuracastBigConfigDeu(AuracastBigConfig):
     name: str = 'Hörsaal A'
     language: str ='deu'
     program_info: str = 'Vorlesung DE'
-    audio_source: str = 'file:./testdata/announcement_de.wav'
+    audio_source: str = 'file:./testdata/wave_particle_5min_de.wav'
 
 class AuracastBigConfigEng(AuracastBigConfig):
     id: int = 123
@@ -69,7 +69,7 @@ class AuracastBigConfigEng(AuracastBigConfig):
     name: str  = 'Lecture Hall A'
     language: str ='eng'
     program_info: str  = 'Lecture EN'
-    audio_source: str  = 'file:./testdata/announcement_en.wav'
+    audio_source: str  = 'file:./testdata/wave_particle_5min_en.wav'
 
 class AuracastBigConfigFra(AuracastBigConfig):
     id: int = 1234
diff --git a/src/auracast/multicast.py b/src/auracast/multicast.py
index 0cbee2a..3b311b0 100644
--- a/src/auracast/multicast.py
+++ b/src/auracast/multicast.py
@@ -418,6 +418,7 @@ class Streamer():
 
             # use wav files and code them entirely before streaming
             elif big_config[i].precode_wav and big_config[i].audio_source.endswith('.wav'):
+                logging.info('Precoding wav file: %s, this may take a while', big_config[i].audio_source)
                 big['precoded'] = True
                 big['lc3_bytes_per_frame'] = global_config.octets_per_frame
 
@@ -632,7 +633,7 @@ if __name__ == "__main__":
     import os
     
     logging.basicConfig( #export LOG_LEVEL=INFO
-        level=os.environ.get('LOG_LEVEL', logging.DEBUG),
+        level=os.environ.get('LOG_LEVEL', logging.INFO),
         format='%(module)s.py:%(lineno)d %(levelname)s: %(message)s'
     )
     os.chdir(os.path.dirname(__file__))
@@ -641,7 +642,7 @@ if __name__ == "__main__":
         bigs = [
             auracast_config.AuracastBigConfigDeu(),
             auracast_config.AuracastBigConfigEng(),
-            auracast_config.AuracastBigConfigFra(),
+            #auracast_config.AuracastBigConfigFra(),
             #auracast_config.AuracastBigConfigEs(),
             #auracast_config.AuracastBigConfigIt(),
         ]
@@ -658,13 +659,14 @@ if __name__ == "__main__":
     # config.transport= 'auto'
     config.transport='serial:/dev/ttyAMA3,1000000,rtscts' # transport for raspberry pi
 
+    # TODO: encrypted streams are not working
 
-    for big in config.bigs: # TODO: encrypted streams are not working
+    for big in config.bigs: 
         #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
-        big.audio_source = big.audio_source.replace('.wav', '_10_16_32.lc3') #lc3 precoded files
-        big.audio_source = read_lc3_file(big.audio_source)  # load files in advance
+        #big.audio_source = big.audio_source.replace('.wav', '_10_16_32.lc3') #lc3 precoded files
+        #big.audio_source = read_lc3_file(big.audio_source)  # load files in advance
 
         # --- Network_uncoded mode using NetworkAudioReceiver ---
         #big.audio_source = NetworkAudioReceiverUncoded(port=50007, samplerate=16000, channels=1, chunk_size=1024)
diff --git a/src/auracast/testdata/wave_particle_5min_de.wav b/src/auracast/testdata/wave_particle_5min_de.wav
new file mode 100644
index 0000000..3d2b575
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diff --git a/src/auracast/testdata/wave_particle_5min_en.wav b/src/auracast/testdata/wave_particle_5min_en.wav
new file mode 100644
index 0000000..bc451c9
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diff --git a/src/auracast/testdata/wave_particle_5min_es.wav b/src/auracast/testdata/wave_particle_5min_es.wav
new file mode 100644
index 0000000..0d67ef1
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diff --git a/src/auracast/testdata/wave_particle_5min_fr.wav b/src/auracast/testdata/wave_particle_5min_fr.wav
new file mode 100644
index 0000000..7a5a2f3
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diff --git a/src/auracast/testdata/wave_particle_5min_it.wav b/src/auracast/testdata/wave_particle_5min_it.wav
new file mode 100644
index 0000000..0e4389b
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