I think what you need is an iPod transfer.
iPod transfer is a program which automatically transfers your iPod and iPhone music, video, playlist, photos back to PC and iTunes.
I know a wonderful ipod transfer and would like to share it with you, that is, AVCWare iPod to iPod/Computer/iTunes Transfer.
http://www.topmediasoft.com/ipod-transfer-avcware.html
As an all-in-one iPod to iPod, iPod to computer, ipod to iTunes transfer software, AVCWare iPod to iPod/Computer/iTunes Transfer automatically transfers your iPod and iPhone music, video, playlist, photos back to PC and iTunes.
It has many features:
1.Compatible with all types of iPod/iPhone
2.Install the software into iPod
3.Manage iPod/iPhone as portable hard disk
4.Playlist Manager
5.Find what you want quickly
6.High speed to transfer files
7.Transfer iPod to iTunes
8.Share iPod with others
Free download:
http://www.topmediasoft.com/download/avc/avc-ipod-transfer-483120.exe