Update app.py

app.py

@@ -59,7 +59,7 @@ with gr.Blocks() as demo:
     gr.Markdown("""
         # MIDI Visualizer test
     """)
-    midi_file = gr.File(label="Upload MIDI File", file_types=[".mid", ".midi", "smf"])
+    midi_file = gr.File(label="Upload MIDI File", file_types=[".mid", ".midi", ".smf"])
     play_button = gr.Button("Play MIDI")
     output = gr.HTML(elem_id="midi_visualizer_container")
     play_button.click(play_midi, inputs=[midi_file], outputs=[output])