I recently dropped in a EFI modded 480 GTX in my 2009 Mac Pro (from MacVidCards - LOVE IT!) but one thing I was wondering was, will the HDMI output on the 480 support audio out as well in ML? I don't see that as an option in the sound configuration, but I haven't actually tried a HDMI cable in the card either. I have not installed any drivers either; this is strictly plug and play. I am right now using a DVI to HDMI cable, which of course is only video output and was looking at one of the DVI+Audio -> HDMI converter boxes, but I was wondering if that is even necessary. I have also just recently done the netkas 5,1 firmware update, so I'm not sure if that addresses any issues or not. Thanks!