Update app.py

app.py

@@ -197,6 +197,7 @@ async def main(
         audio.export(temp_audio_file.name, format="mp3")
     
     # Rename the temporary audio file based on the text input
+        global renamed_audio_file
         renamed_audio_file = os.path.join(tempfile.gettempdir(), f"{text_input}.mp3")
         os.rename(temp_audio_file.name, renamed_audio_file)