Update app.py

app.py

@@ -15,5 +15,7 @@ def greet(source, target):
     )
     return "output.wav"
 
-demo = gr.Interface(fn=greet, inputs=["audio", "audio"], outputs="audio")
-demo.launch()
+demo = gr.Interface(fn=greet, inputs=[gr.Audio(value="kratos.wav", type="filepath"), 
+                                      gr.Audio(value="nikole_kidman.wav", type="filepath")], 
+                    outputs=gr.Audio(type="filepath"))
+demo.launch()