You keep saying that in this thread, but I can't for the life of me imagine why you would launch a live-video product without audio. It just doesn't make any sense, is likely to be taken as the site "being broken", and finally result in a "um..that's dumb" when the fact that audio is intentionally excluded is revealed to the user.

To be blunt, for a video-broadcasting site, frickin' AUDIO isn't a "fringe" feature.