OS X 10.10 or later. This script will look for an image file in the parent folder of each selected track's file--presumably its Album folder in which you have previously placed an image file of some sort--and apply the data from that image file as artwork for the track.
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downloaded 5m 18s ago
Swap the name with the artist of selected tracks
downloaded 6m 29s ago
Apply selected CD's CD Text to its disc and track tags
downloaded 12m 9s ago
Correct song titles listed as "Artist - Song Name"
downloaded 48m 52s ago
Gather audio tracks whose files contain no artwork metadata
downloaded 50m 27s ago
Restore each selected track's artwork from an image file stored in its Album folder
downloaded 51m 54s ago
Export album artwork as folder.jpg to Album folder