You need to set the audio clip to Auto Play, so that as soon as the user clicks the Hotspot or Action, the audio starts.
To set an audio clip to Auto Play:
- Double click the audio element to open the context-specific Audio Settings tab and ribbon..
- Click Auto Play.
You can also hide the controls for the audio clip if you want.
You can show an element that links to an audio or video element and any other audio/video that is currently playing (e.g. narration) will pause. It will resume playing once the element is hidden.