Hi!
First of all, hanks for this great tool, i's really a life save when it comes to manage a library with SIMPLICITY 
I'm tagging my whole music library for a few weeks now, and I discovered only today that we can change the type of album art in the tags.
So I wanted to add the artist cover to all my music files, but when i pick a folder containing all the albm of an artist, I can't find how to add a new cover without deleting the previous ones.
I saw it was possible to do it if I add the artist picture album by album, but it's such a hassle... Isn't there any way to add a cover to a whole folder of mp3 without deleting all I've done before?
Thanks in advance dudes 
