Improve error handling in audio processing; enhance troubleshooting tips for FFmpeg errors

src/streamlit_app.py

@@ -764,13 +764,14 @@ with tab2:
                     with col2:
                         if results['audio_viz']:
                             st.pyplot(results['audio_viz'])
-                  except subprocess.CalledProcessError as e:
+                            
+                except subprocess.CalledProcessError as e:
                     st.error("Error processing audio file")
                     st.error(f"FFmpeg error: {e.stderr.decode('utf-8') if e.stderr else str(e)}")
                     st.info("Troubleshooting tips:\n"
-                           "• Try a different audio file format (WAV or MP3 recommended)\n"
-                           "• Make sure the file is not corrupted\n"
-                           "• Try a shorter audio clip")
+                            "• Try a different audio file format (WAV or MP3 recommended)\n"
+                            "• Make sure the file is not corrupted\n"
+                            "• Try a shorter audio clip")
                     
                 except PermissionError as e:
                     st.error(f"Permission error: {str(e)}")