This script will change the file type of the selected AAC tracks to "M4B " and file extension to ".m4b", thus making them bookmarkable. (That is, the track will natively resume playing wherever you left off the last time you played it.) Additionally, when used with iTunes 7 or later, deletes and re-adds each track so it will appear in the Audiobooks Library. Ratings, play count, last played date, skip count, and skipped date are preserved.
Perhaps Also of Interest...
downloaded 5m 7s ago
Re-associate batch of dead tracks with files from selected folder
downloaded 5m 37s ago
Applet assists with swapping, copying, appending data between track tags
downloaded 6m 51s ago
Copy selected tags as list to Lyrics tag of selected tracks
downloaded 7m 58s ago
Exports and then re-imports selected tracks' artwork
downloaded 14m 16s ago
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
downloaded 33m 56s ago
Batch-append text to comments