Ther's probably a quick fix for this, but here goes: I have my iMac 2.8 wired to my home theatre stereo unit (some mid-range Sony receiver). Watching movies via Front Row is a bit frustrating, tho, because of the annoying audio. There is a loud buzzing sound coming from my speakers. I WAS having the same issues with iTunes, until I doscovered a preamp built into the iTunes equalizer, which I simply turned up...problem solved. Is there any kind of equalizer for either apps (like quicktime) or for the OS I can install? Any other suggestions on how to fix this?