Cucusoft iTunes to iTunes Transfer. Only 29.95
 
This an easy to use iTunes utility designed to help you backup/recover/transfer your whole iTunes library and media files. It's a simple way to keep your iTunes in sync everywhere. You can use "iTunes to iTunes Transfer" to backup your own iTunes library or synchronize multiple iTunes on different computers. The backed up library file is pretty easy to transfer to other iTunes, and it's easy to manage. So with this iTunes Transfer software, you can manage your iPod/iPhone/... on different PCs.