Many such software on http://www.google.com you can search.
You can try iPod
to PC Transfer. It is a fast, easy-to-use, key feature:
1. Transfer and backup iPod/iTouch/iPhones/iPad files to Mac hard disk and iTunes directly
2. music, movie, photo, ePub, pdf, audiobook, voice memo, Podcast and TV Show from iPod to PC
3. Copy songs, movies and photos between iPods, iTouchs and iPhones
4. Manage iPhone/iTouch/iPod on any computer
For more information and real purchase http://www.kooksoft.com/iMacsoft-iPod-to-PC-Transfer_1696.html
If you still have questions, contact with me or keep asking on yahoo answer.