Update app.py

app.py

@@ -30,8 +30,10 @@ from pydub import AudioSegment
 
 def read_as_single_channel_16k(audio_file, def_sr=16000, verbose=True, aim_second=None):
     assert os.path.exists(audio_file)
-
+    st.markdown(os.path.exists(audio_file))
+    
     file_extension = os.path.splitext(audio_file)[1].lower()
+    st.markdown(file_extension)
 
     if file_extension == ".mp3":
         data, origin_sr = librosa.load(audio_file, sr=None)