Update to work with latest gradio 4.19.0

.gitignore

@@ -1 +1,2 @@
 .DS_Store
+__pycache__

app.py

@@ -66,7 +66,10 @@ def classify_audio(audio):
 
 with gr.Blocks() as demo:
     with gr.Row():
-        inputs = gr.Audio(source="microphone", type="numpy", label="Input Audio")
+        gr.Label("Please say a Cantonese word with exactly 2 characters, like 你好, into the microphone and click submit to see model predictions.\nNote that the predictions are not very reliable currently.")
+
+    with gr.Row():
+        inputs = gr.Audio(sources=["microphone"], type="numpy", label="Input Audio")
         submit_btn = gr.Button("Submit")
 
     with gr.Row():