For macOS 10.15 and later only. This script can be used two ways:
When run as an Applet, it will use the assigned artwork from the selected tracks as the icon for the folder containing each track's corresponding file in the Finder--presumably, this is the file's "Album" folder.
When launched as a Droplet--by dragging one or more folders to its icon--it will examine every folder (at all depths) for the first audio file in any folder that contains image metadata and use that image as the icon for that folder.
This app is free to try in Demo Mode. In Demo Mode only up to 5 folders can be processed per launch. You can purchase a code for $1.99 which will remove the Demo Mode restriction. Launch the app and click "Register..." in the its File menu to make an in-app purchase.
- UI and logic maintenance