Update app.py

app.py

@@ -873,6 +873,7 @@ if st.session_state["generated_questions"]:
                     mode=WebRtcMode.SENDONLY,
                     audio_receiver_size=256,
                     media_stream_constraints={"audio": True, "video": False},
+                    desired_playing_state=False
                     rtc_configuration={"iceServers": get_ice_servers()},
                 )