For macOS 10.10 and later. This applet can examine the iTunes library and sort audio and video tracks purchased from iTunes into discrete playlists by either the purchaser's name or Apple ID (eg: "Purchased by Jane Smith" or "Purchased by email@example.com") which in turn will be placed in a "Purchaser Playlists" playlist folder.
Tracks must have corresponding local files since purchaser information is stored as metadata. iCloud Music Library/iTunes Match tracks in the cloud and "dead" tracks will be ignored.
Free to try in Demo Mode: While in Demo Mode, the number of tracks associated with each Purchaser will be reported but sorting tracks into playlists is disabled. An in-app purchase of a registration code will enable playlist creation.
To purchase a registration code, download and launch the app. Click "Register..." in its File menu and follow the prompts to purchase a code for $1.99. When your payment is processed, you will be emailed a registration code that will unlock the Demo Mode restriction.
Sort using the purchaser's name or Apple ID.
(via in-app purchase)
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