This file is available on the musicbrainz public ftp site.
release_group | cover_art_url
Is it possible to derive a mapping from release_groups to cover_art_urls? This maps release_group to some kind of cover_art id. Is the url somehow encoded in the cover_art table?
$ wc -l * 14 cover_art_archive.art_type 3138204 cover_art_archive.cover_art 3380016 cover_art_archive.cover_art_type 4 cover_art_archive.image_type 8934 cover_art_archive.release_group_cover_art $ head -1 cover_art_archive.cover_art 829358878 268158 17462125 1 2012-04-30 21:48:55.085782+00 0 image/jpeg \N \N \N \N