It has been a while for me since I last used it, but if it is setup using an account you don't have access to, syncing will not work. However, if the iPod is setup as a drive (meaning it shows up on your computer as a drive and you can copy files to and from it) the songs are stored as files on the iPod and you can copy those over. The file-names are unrecognizable, but you can get the songs.