Hi, sorry for the delay in reply. It turns out that there’s a bug with pausing and stopping sounds but the dev team are currently working on it.
As a workaround, I have created something similar with Pavlovia surveys that allows you to present audio (play/pause/stop) via html audio tag and have the likert scale underneath. I’ve attached an example Pavlovia Survey
If you are happy with it, I can share with you how to do it.
Best wishes,
Sue Lynn