Yesterday proved to be quite disastrous as far as the audio issues; though I did manage to get a startup screen and videos to play -- only problem was there was NO SOUND on my end using Rumble Studio - only from TeddyVinny (and audio was low and not full sounding).
After the first show, I switched to OBS and had no audio issues at all; but then the show started freezing and cutting out.
I'm going to keep on trying until it works. Come along for the ride if you want. But I'll be honest, I think the problem is on Rumble's end.