Just got the receiver delivered from Amazon, but I'm having a problem. I've got a Blu-Ray player going in to HDMI1, and HDMI out going to my HDTV. Pretty simple, right? But I've got no sound from my ...

This is an AV issue, but looks to be Mac-specific, so posting here rather than in the A/V Club. Sorry for the length, but I'm trying to supply all relevant info) Summary: I have an MBP connected via ...