For my birthday, my wife bought me an Apple AirPort Express wireless router. This thing rocks! It allows you to wirelessly send music from your computer (mac or pc) to anywhere within signal reach (50m I believe). If you have a bunch of .mp3's on your computer but want to listen to it in another room, this is the answer. It took me all of 1/2 hour last night to get it set up. I just plugged my el-cheapo powered speakers into the AirPort audio port, my cable modem into the Ethernet port and the AirPort Express into an electrical outlet. Turned everything on and my computer instantly recognized a new wireless network. Ran the installation CD and now my verison of iTunes gives me an option to play my music either through the computer or through the network.