I just bought one of the new Mac mini's a few weeks ago and love it. I currently have the system connected through HDMI to my Denon AVR-889 receiver. When I try to play any surround file (such as a TV show or movie) through iTunes, I get nothing but ear piercing static. The stereo option works fine. I have tried just about every setting I can think of in the Audio MIDI utility but have had no luck so far. I have also tried some suggestions on the internet in iTunes to max out the volume slider, turn off equalizer and sound enhancer, but none of those things have worked. Any other ideas?