There is no audio through HDMI. I can't believe it!...If you have an HDMI receiver (which I do) you cannot go through the receiver!...I can plug in to my projector direct, and get a great picture, but then I would have to use coaxial or optical for sound!...It simply will not even play through an HDMI receiver...I have 2 HDMI receivers and it will not play through either one!...I have swapped the unit out already but the other one is the same...wow!...BUMMER!!!!!!....NO HDMI AUDIO!...

according to this (http://www.avsforum.com/avs-vb/showthread.php?p=9550086&&#post9550086) in the owner's thread it does

No...if you read it, it says 2 channel PCM for HDMI which doesn't work...if you want 5.1 you have to hook it up analog outs....trust me, the unit will "not" even play through my HDMI Pioneer receiver unless I switch to passthrough which of course gives me no audio through HDMI.

It's too bad because the PQ is pretty darn good and there has been no lock-ups or freezes whatsoever on Blu-Ray or HD-DVD...What a major bummer on the audio!