[chucksplatt]

Sometime last year, Xiph made an official spec for embedding covert art into Vorbis tags. That information can be found here:

http://wiki.xiph.org/index.php/VorbisComment#Cover_art

The site claims that it is similar in structure to emedded art for MP3, so supposedly it wouldn't be that much of a hassle. Would love to have this supported in XBMC.