I need help about backing up my Ipod touch?

ok so the sleep button on my itouch is broken and i have to send it to get fixed and they have to restore it, the problem is i've got so many important notes saved and 1200++ music on there, in addition to many personalized playlists. i can't just delete everything because i've got 5000 songs in my itunes library and it'll be a pain to have to go back and select songs to put in my ipod once it's returned, fresh and completely CLEAN.
is there a way i can maintain the information i have on there (i don't have a MAC)
or any other suggestions of how i can do this??
 
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