I just created my first CD insert using iTunes 'print' command. A very nice insert. However, to fit my playlist onto the CD, I had to un-check one song. After printing the cover and buring the CD, I noticed that the unchecked song is not on the CD (expected), but appears on the insert (unexpected!).
So if you want your iTunes cover to match the music actually burned to the CD, you'll have to remove the unchecked songs from the playlist first.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040511212322221