This script will change the extension/file type of the files of the selected AAC tracks to M4B which makes them natively bookmarkable (that is, the track will resume playing wherever you left off the last time you played it). Deletes and re-adds each file so its track will appear in the Audiobooks/Books library. Ratings, play count, last played date, skip count, and skipped date are preserved.
Remove iTunes tracks disassociated from files
Batch set new Last Played/Last Skipped of selected tracks
Set choice of various number tags of selected tracks incrementally
Exports and then re-imports selected tracks' artwork
Export artwork of selected tracks to parent or specified folder
Restore each selected track's artwork from an image file stored in its Album folder