We must be at some stage in technology when a guy notes in an online discussion that he has a PDA set to remote control his stereo and does so while he's in the bathroom.
There is a program, Salling Clicker, for the Mac that allows you to control it via a Bluetooth wireless enabled device, in this case a Palm Treo 650. The Mac can either have a really good speaker system or be connected to the home stereo (you can get very hi tech in this regard).
The next big step will be to have iPods Bluetooth enabled. Then hookup in cars will be simplified, as well as remote control of the iPod connected to the home stereo.
Still, remote control of the stereo via your PDA and computer. Yeah.