Update app.py

app.py

@@ -128,7 +128,7 @@ def main():
 
         # Save file to local storage
         tmp_input_audio_file = os.path.join("/tmp/", audio_file.name)
-        file_extension = os.path.splitext(audio_file)[1].lower()
+        file_extension = os.path.splitext(tmp_input_audio_file)[1].lower()
         st.markdown(file_extension)
         if file_extension in [".wav", ".flac"]:
             with open("test.wav", "wb") as f: