Ok, a little self-reply here because I need a bit of help with what is probably a stupid question, but I can't for the life of me figure this one out.

I'm currently busy re-tagging all my files. This will be a much bigger chore than I had bargained for, but hey, isn't this always the case with this kind of stuff?
I've been trying to download album art using iTunes. This works, but for some reason iTunes only adds the album art to its own library and not to the mp3 tag of the file itself. This is a pain, because I really want the art to end up in the file itself. (it's no use to my Sonos system if it doesn't)

Surely there must be a way to get this done? I could have sworn I've passed by a program that specialises in downloading iTunes album art to a .jpg file on the hard disk, but now I can't seem to find this program again. Help!
(I've also tried Media Monkey, but while I found a way to get it done using that program, it's such a hassle that I really would like to use an alternative...)

Thx!