Update app.py

app.py

@@ -114,6 +114,7 @@ with gr.Blocks() as demo:
                 sources=["upload", "microphone"],
                 type="filepath",
                 label="Reference Audio File (Optional)",
+                format="mp3",
                 value="https://storage.googleapis.com/chatterbox-demo-samples/prompts/female_shadowheart4.flac"
             )
             exaggeration = gr.Slider(