iTunes does a respectable job of downloading album artwork, but it seems like there's always a few songs or albums that trip it up. In my library, for instance, the software has trouble with various jazz classics.
Fortunately, it's a simple matter to manually add artwork to any song that needs it. For starters, let iTunes take another crack at it: right-click the song and choose Get Album Artwork. If the artwork database was updated since iTunes last scanned your library, you might get lucky.












