BATCH method to import album art from file to tag?

Hey, new here but long-time Mp3tag user.
Till now I've been avoiding importing the album art in the tag because I use 400x400 images and that would considerably increase the file size.

Now however I have a new walkman phone and that can only read album art if it's embedded in the tag so...

Is there a way for me to import my several hundreds album art files, named either folder.jpg AND %album%.jpg (winamp reads them that way and it's easier when I have a multi-album folder) into my several thousands of MP3 files in one go?

You can use the action type

Import cover from file

/t/967/1
As format string enter i.e. folder.jpg or %album%.jpg

THANKS that worked beautifully!

I did import art by file and then specified
folder.gif
folder.jpg
%album%.gif
%album.jpg

in every case clicking the delete current art option so that there wouldn't be any doubles.
The reason for that is that if there were both folder and %album% files (multi-album folders) chances are the later would be the correct one while there are some files I had in gif (and if again there were both jpg would most probably be the preferred one).

It seems to have worked just fine for a test batch I did, gonna go make the rest of them now.

Thanks again!!!