i use a macintosh G4 and my Roommate uses a PC and itunes.
He turned on his computer, and he got my music that I downloaded from Limewire onto his itunes player.

I wired my apartment building so that about 7 apartments all share DSL.

Is this a security issue that I should be concerened about?
How can I stop my music ending up on someone elses computer?
Please help.

thank you.