Album art via Tag Sources ?

Hey all. I have just discovered embedded album art - yeah, I'm behind the times. I was using Tag Sources / Amazon to find my artwork. The problem is, it seems to want to update my title, artist, etc. as well as the artwork - I only want to add the artwork.

Is is possible ? I already have all of my tags formatted the way I want them - but am trying to find a way to just add the artwork.

NOTE : Trying to avoid downloading each artwork manually, then adding it via extended tags.

Thanks all.

There's a script that adds only cover art