Kizer8, I see the same thing, and there's not too much you can do about it, other than to set up a 'zero cache' and pre-cache programs you watch so you don't get buffering. What's happening is that the stream at the source is not as fast as your client is in syncing audio to video, so that's why the audio is dropping out. It can also be a bug in the beta... you can report the issue to the developers over at kodi.tv for that, or at least try to find a solution there for the stalker pvr addon.