I know I can hook up speakers, and I know I can hook up a printer, but what is there any other sort of wireless stuff I can do with this? Mainly I want to know if I can hook up an external drive to the airport to play music from. I ask because I don't have any music on my internal drive, as it's a laptop with bootcamp and not much HDD space left at all. I also read that you can have a home "network" with the airport express, what exactly does this mean? Filesharing between computers?