This script will change the file type of the selected AAC tracks--which you have previously made bookmarkable yourself with the script Make Bookmarkable--to "M4A" and file extensions to ".m4a" making them UN-bookmarkable. When used with iTunes 7 or later, each track is deleted and re-added so that it will be removed from the Audiobooks Library. Ratings, play count, last played date, skip count, and skipped date are preserved.
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Use special track to stop iTunes, cue next track
downloaded 35m 37s ago
Apply selected CD's CD Text to its disc and track tags
downloaded 46m 10s ago
Gather audio tracks whose files contain no artwork metadata
downloaded 48m 19s ago
Resample selected tracks' artwork to user-set size limit
downloaded 54m 28s ago
Exports and then re-imports selected tracks' artwork
downloaded 1h 9m 13s ago
Export selected playlists as individual XML or M3U files