No album cover for bought music

By default, purchased Apple Music files do not contain the cover art; the cover art is downloaded to a separate database. This process can delay the cover art showing up in djay Pro.

A solution is to embed the cover art in the audio file; then the cover art will show up immediately in day Pro. You can do this manually or use the script below.

Re-Embed Artwork (macOS) from Doug’s AppleScripts.
Copies/embeds Apple Music cover art into audio files. Runs in Apple Music as a script in the menu bar. Free for use on individual files, but there’s a fee for use on multiple files.
https://dougscripts.com/itunes/scripts/ss.php?sp=mxreembedartwork