I'm going a little nuts. I have a pretty large and always expanding collection of CDs that I rip using iTunes (Usually as Apple Lossless but I've tried other formats and get the same problem). Almost invariably, there will be intermittent "clicking" noises which almost sound like soft percussion drum lines, but don't fit into the song. If I rip the songs using iTunes on my wife's PC I don't have this problem. It is a source of embarrassment having to use a PC to work around a problem on a Mac. Does anybody have this problem? Is it a hardware problem? This happens on pretty much every brand new CD, so it's not a CD problem. I'm not running anything fancy in the background. I'm thinking of taking my iMac back to Apple to fix it but I'm afraid they'll tinker with my settings or reset the machine and it would be a pain to get my computer back to its current state. This is my only complaint about my iMac. I hope somebody can help.