This application will list the file paths of the files in your designated "iTunes Media" folder which are not in iTunes' library. Additionally, you can select a different parent folder and its contents will be compared to the iTunes library. Includes options to Add a selection of found files to iTunes, move them to the Trash, and export to a text file.
Requires Mac OS X 10.8 or later.
See the video on YouTube.
These files ended up in my (archaic) "iTunes Music" folder on my local drive but are not in iTunes' database. They probably got here because they were added to iTunes when my designated "iTunes Media" folder's external drive was not mounted and iTunes defaulted to this location. After I correctly added them, the original copies remained here.
Remove iTunes tracks disassociated from files
Make a text file listing Albums that have some/no tracks with artwork
Copy chosen tag info from one set of tracks to a different set of tracks
Swap the name with the artist of selected tracks
Change file type to make selected AACs bookmarkable
Set choice of various number tags of selected tracks incrementally