Dear Steven,
First, thank you for this great tool, it is the best I've seen so far. A wish, though :
for an individual track, you can choose to embed the picture in the music file PLUS link it to a track (i've still got to find out the difference so I always tick both...) WITHOUT saving the found artwork to a folder.jpg. This is particularly practical e.g. when you have a bunch of different songs in one folder that are not of the same album. However, this only works song per song, I have not found the possibility to do it via the "edit" option (shift+enter). This would save me a real great deal of time !
Thanks and regards !