I simply will not believe that any of that audio originated from a webcam delivered over the internet. It would be telephone quality at best. Even if they were all outputting at maximum bandwidth, the microphone quality on those things are awful. I only saw one dude with a decent microphone. And the notion that they are doing it live is even more absurd. There would be so much lag between users that it would be all out of sync and messed up.
My name is Joe. I crush dreams.
EDIT: OK I see how they did that now. But I still like crushing dreams.