OS X 10.10 or later. This applet will scan iTunes for tracks that are not assigned to any user-created playlists and display them. Includes options to export the list as a text file, ignore Smart playlists, ignore non-Music tracks, and copy selected tracks to a new or existing iTunes playlist.
These tracks aren't assigned to any regular playlists in iTunes.
(via in-app purchase)
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Exports and then re-imports selected tracks' artwork
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Copy Artist to Album Artist of selected tracks
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downloaded 25m 44s ago
Removes leading and trailing space characters from chosen tags in selected tracks
downloaded 31m 27s ago
Display/export a text file list of chosen tag data in library or playlist