ok, so my cousin wants to connect his iMac to his home stereo. I could have sworn apple used to sell a cable that allowed you to do this through RCA cables, but I can't find it anywhere on their webstore. I know that m-audio makes one that uses an optical cable, and so does h/k, but those are expensive and he doesn't want to spend a lot of money to do this. i know a lot of people here connect their macs to their home stereos, so any cheap suggestions?