AirTunes

Apple today introduced a new wireless base station, the Airport Express. It is a very small unit that plugs directly into the wall, but has a even more unique feature: an audio-out jack. Using AirTunes you can connect your stereo to iTunes and play music stored on your PC or Mac wirelessly. At $129, this is a fairly inexpensive way to play music throughout your home AND get a portable WiFi base station at the same time.