ONVIF Audio codec support Samsung Tablet A9+

I have an Arenti baby cam which has ONVIF support. Generally this works great and I can display the camera stream on dashboards etc.

The issue is that the main dashboard is on a Samsung Tablet A9+ in the kitchen and on this device there is no audio from the camera stream. The audio options are greyed out. It works fine on other devices (Mac, iPhone). I assume this is down to audio codec support on teh tablet, but wondering if there are any ways to resolve?