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.
Perhaps Also of Interest...
downloaded 6m 6s ago
Displays files in iTunes Media folder not in iTunes track library
downloaded 8m 47s ago
Remove selected tracks and Trash or delete their files
downloaded 38m 16s ago
Export selected playlists as individual XML or M3U files
downloaded 39m 56s ago
Applet assists with swapping, copying, appending data between track tags
downloaded 40m 5s ago
Exports and then re-imports selected tracks' artwork
downloaded 40m 28s ago
Use tag data to formulate new file name for selected tracks' files