I also have a RPI Model B that I bought as a media centre, but for that to work, it needs to go through my Pioneer receiver to my projector (because I have other sources and I need to switch among them).  Unfortunately, that doesn't work, although it works if directly plugged in to the projector.

I tried at the time to email someone at Raspberry, but never got a reply.  When I saw Evan's post, it reminded me that I'd really like to get it working, and that somebody here might know something.

Thanks  ../Dave