Copy tunes from iPod to computer
When you plug the ipod in and itunes asks if u want to "synch and erase" tell it no. In the options section tick "Manually manage music" and "Enable disk use". Then you should be able to see the drive through windows explorer as removable storage (e.g. F:\) Enable hidden files & folders in explorer and then you will be able to find the music stored in lots of folders named Fd where d is some number. Copy all of these files to your hard drive into a temp folder and once completed ask itunes to import them into the library making sure you have the Copy Files to iTunes Music Folder when adding to Library" option set in the advances tab of itunes prefs and also "Keep iTunes music folder organised". This will take them out of the Fd buckets and organise them nicely inside the itunes folder.
Now that you have your music safe and sound on your hard drive you can change the options back to auto synch if u like by unticking the "Manually manage music" box and it will erase your ipod and put all the music back on it. A convoluted solution to a problem that shouldnt exist. Where there is a will there is a way.
"Can u hear what I'm saying....got my mind meditating on love, love"