HDMI audio stopped working on new 2010 Mac Mini

I am running snow-leopard server. I have the HDMI connected to a Pioneer Elite SC-27, then via HDMI to a Panasonic Plasma TV. I get the digital picture feed just fine on the TV, but there is no audio. I checked the audio settings, SC 27 is selected as output.
Audio was running fine earlier today... just stopped working. Anyone else experience bugs with the HDMI out audio?

Try shutting down the computer and turning off the receiver and tv.
Take out the HDMI cable and swap the ends and make sure it's seating fully in both ports.
Then turn on the receiver and tv.
Then power on the Mini and immediately hold down these 4 keys on the keyboard: COMMAND OPTION P R
Hold them down until the computer chimes 3 times.
See if that resolves the problem.
If it doesn't, I would try another HDMI cable.

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