This script will export the artwork of the selected tracks, or the tracks in a selected playlist, as an image file to the folder which contains each selected track's file--presumably the track's Album folder--or a specific user-selected folder. If multiple album tracks are selected, the script will make sure only one artwork file per Album is exported.
OS X 10.6 or later only.
Also see Save Album Art as folder.jpg.
This Preferences pane for the script remembers your settings between uses.
Create text file listing tracks common to and exclusive to two playlists
Change file type to make selected AACs bookmarkable
Copy selected CD's CD Text to the clipboard
Search Wikipedia using the Song Name, Album, Artist, or Composer of selected or playing track
Rename selected tracks' Song Names with their filenames (minus extension)
Exports and then re-imports selected tracks' artwork