Update app.py

app.py

@@ -32,6 +32,6 @@ with gr.Blocks() as demo:
     synth.click(gen, inputs=[piano_only, length], outputs=[txtout, fileout, audioout])
     with gr.Accordion("Samples", open=False):
         for i, audpath in enumerate(glob("*.wav")):
-            y, sr = librosa.load(filename)
+            y, sr = librosa.load(audpath)
             gr.Audio(interactive=False, value=(y,sr,), label=f'Sample {i + 1}')
 demo.queue(api_open=False).launch(show_api=False)