This is great--really appreciate Ryan setting this up!
Yeah, the sound thing is, I believe, the nature of Google Hangouts. The
system seems to switch audio and video to whomever it thinks should be the
focus of attention, based on audio and visual activity. (This is conjecture
on my part, having viewed a few hangouts recently).
Anyway, I still love the idea of broadcasting this live for those of us who
are stuck at work!