my sis needs help

hey everyone my sister recently won a new shuffle on the internet, and is having a bit of trouble. She fell into somewhat of a no fly zone. my bro is windows and im mac. she got some music from my brother and now wants to get some of the music i have on my comp without losing the music she currently has. every time i plug in her ipod though it says i have to erase its contents and sync it to my comp. any suggestions, thanks.

Well, technically that is illegal. She is getting copies of music not owned by herself, but by you and your brother.

An iPod will only sync with one computer...Mac or PC. You can sync multiple iPods to one computer though.