Yep that's what I use also, I've also found that for the album art to work on the mmi it needs to be no bigger than 500x500 and under 200KB in size.I use a program called MP3tag to add art to each album.
i download it and go to save and it shows a error saying it will only save one per runIf using MP3Tag, you search for the album art on the internet. It finds it for you automatically.