You can view the ipod's content by viewing hidden files and folders in the tools > folder options menu of explorer. Unfortunately the ipod names songs very ridiculously so if you had any sort of organization before that might be lost. You can just copy all of those songs from the ipod and drag them into a folder, then have itunes use that folder for your music. Everything will be in order in the progra,, just the actual file names of your songs will be messed up.
