You can only set the audio function in the downloadable computer application or online Java application.
Live audio: You can use the audio function directly in live view. Drag the camera into live view and press the right mouse button. A small menu will appear. Press the audio button for live audio. You can also manage the volume of the sound in this menu.
Record audio: If you want to record sound, you can manage this at ‘camera settings’. Go to ‘Settings’ tab and select the camera from the list. Select ‘footage settings’ and select the checkbox “Record sound”. Press save.