Help Saving An Old Ipod

I have an old Ipod, the Apple iPod 5th Gen - Enhanced 30 GB. Link below:

http://everymac.com/systems/apple/ipod/specs/ipod-5th-generation-enhanced-specs.html

It has A LOT of music on it and I haven't been able to use it in a long time. I want to see what I can do to save this thing. When I turn it on, it just says: connect to your computer. Use iTunes to restore.

On itunes when its plugged in it just says do not disconnect and it prompts me to restore, but says I will lose all data.

Any programs/ways I can save the content on this thing?