Yeah OK. Well you can download an application called DiskAid.
You can run the trial for 30 days I think, and it doesn't have any limitations on how many songs you can transfer. Then once you open it (with your iPod plugged in), click down the bottom on the drop-down box and click "Media Folder", then copy the whop Music folder to your Mac. It will copy over in weird named files. And the folders will be called "F1, F2, F3" etc, depending on how much music you have. THEN... drag all that music to your iTunes library and it will be named correctly.
Here it is anyway:
http://www.digidna.net/products/diskaid
But I'm hoping you have an iPod Touch. Because I think it just works for iPhone and iPod Touch. But there are plenty of other programs out there that will also work with iPods if you don't have an iPod Touch. Just a simple Google search will have you on your way.
All the best,
-Ben