hey. do you guys know if allowing music to be shared via iTunes (on my mac, of course) is any security risk on a network? I'm at a university, and I'm sure there are plenty of evil bored hacker kids on it, so I don't know. Also, in the itunes preferences it says that X number of users are connected to my music; is there any way to find out any more information about those users? As a complete side note, do you know how I can send a message directly over a network that includes both macs and pcs? Thanks so much.