I've had to reinstall iTunes and now, upon plugging my iPod in, all the music in the iPod is faded and inaccessible. This has happened before and the only way to fix it was to wipe everything off the iPod and start again. Before I waste all my time doing that way, is it actually possible to change a setting somewhere which will let me change/add music? The only remotely relveant thing I can find is the audible account, and I've tried authorising this (same) computer again, successfully, but still no joy.

Thanks,
Michael