Update app.py

app.py

@@ -334,7 +334,7 @@ async def on_generate(api_service, api_key, serpapi_key, title, topic, instructi
         model_client=model_client,
         handoffs=["slide_agent"],
         system_message="You are a Research Agent. Use the search_web tool to gather information on the topic and keywords from the initial message. Summarize the findings concisely in a single message, then use the handoff_to_slide_agent tool to pass the task to the Slide Agent. Do not produce any other output.",
-        tools=[{"function": search_web, "name": "search_web", "description": "Search the web using SerpApi", "parameters": {"query": {"type": "string"}, "serpapi_key": {"type": "string"}} }]
+        tools=[search_web]
     )
     slide_agent = AssistantAgent(
         name="slide_agent",
@@ -359,7 +359,7 @@ Example output:
         model_client=model_client,
         handoffs=["feynman_agent"],
         system_message=f"""
-You are a Script Agent. Access the JSON array of {num_slides + 3} slides from_synced the conversation history. Generate a narration script (1-2 sentences) for each slide, summarizing its content. Output ONLY a JSON array wrapped in ```json ... ``` with exactly {num_slides + 3} strings, one script per slide, in the same order. Ensure the JSON is valid and complete. After outputting, use the handoff_to_feynman_agent tool. If scripts cannot be generated, retry once.
+You are a Script Agent. Access the JSON array of {num_slides + 3} slides from the conversation history. Generate a narration script (1-2 sentences) for each slide, summarizing its content. Output ONLY a JSON array wrapped in ```json ... ``` with exactly {num_slides + 3} strings, one script per slide, in the same order. Ensure the JSON is valid and complete. After outputting, use the handoff_to_feynman_agent tool. If scripts cannot be generated, retry once.
 Example for 1 content slide:
 ```json
 [
@@ -776,6 +776,7 @@ with gr.Blocks(title="Agent Feynman") as demo:
                 serpapi_key = gr.Textbox(label="SerpApi Key", type="password", placeholder="Enter your SerpApi key")
                 num_slides = gr.Slider(1, 20, step=1, label="Number of Content Slides", value=3)
                 speaker_audio = gr.Audio(label="Speaker sample audio (MP3 or WAV)", type="filepath", elem_id="speaker-audio")
+                audio_preview = gr.Audio(label="Audio Preview", interactive=False)
                 generate_btn = gr.Button("Generate Lecture")
         with gr.Column(scale=2):
             default_slide_html = """
@@ -788,7 +789,8 @@ with gr.Blocks(title="Agent Feynman") as demo:
     
     speaker_audio.change(
         fn=update_audio_preview,
-        inputs=speaker_audio
+        inputs=speaker_audio,
+        outputs=audio_preview
     )
     
     generate_btn.click(