I back mine up to cd's by using playlists and sort by date added. I either mark the disks by date or save the playlists to remember the last song backed-up ...

iTunes Library Toolkit is an inexpensive tool that will help keep your iTunes Library tidy. When you rely on iTunes to manage your music collection and all of the apps and files you store on your iOS ...

I recently audited my music library. Because of some weirdness I won't go into here, I had a couple of gigs of music files in my music library that weren't added into iTunes. But quite apart from that ...