I share you a smart tool called iPod to iPod/Computer/iTunes Transfer.
1: Transfer/Share iPod files from one iPod to another iPod.
2: Transfer/Backup iPod files from iPod to your computer.
3: Transfer/Backup iPod files from iPod to your iTunes.
4: Manage your iPod like an harddisk.
5：Transfer files from your PC to your iPod.
With this useful tool you can transfer your iPod files between iPod and iPod, iPod and Computer, iPod and iTunes easily and fast.
Just try it and hope it can help you.