This script will remove all replications of the selected tracks (or all the tracks in the selected playlist) from every other user-created playlist (ignoring Smart, Genius and Media Library playlists). The original tracks will not be removed from the selected playlist.
Also see Copy Tracks to Multiple Playlists.
Perhaps Also of Interest...
downloaded 22m 51s ago
Set selected tracks' names using any combination of selection order, current name, track number, episode ID, and episode number
downloaded 33m 9s ago
Export album artwork as folder.jpg to Album folder
downloaded 40m 35s ago
Move selected playlists to a new or existing folder
downloaded 57m 17s ago
Search allmusic.com website (AMG) with data from selected or playing track
downloaded 58m 42s ago
Add or subtract a user-entered number from each selected track's Plays
downloaded 1h 8m 13s ago
Set choice of various number tags of selected tracks incrementally