ipod Transfer help

So my fiend has an ipod nano and recently got an new touch. Her iPod default is on windows, im on mac. Im trying to transfer her music from older to new without having to put the new iPod in Mac format (VMwerefusion has been shutting down for 3 hourss). Any ideas how to transfer songs on the mac and still be on windows for ipod?

Thanks!

You won't like this answer.

Sync it to her own Windows machine, not yours. When she gets home, 1st sync, it's going to blow everything away and resync to that machine anyway.