Do you have any plans to support embedded cover art in the FLAC? I believe that is the only thing that is missing in the FLAC that I would like to see.
Errr, it's already in there...
Version 2.1.1 -- Release 2007/01/07
Changes:
4. Added "Remove All Images with Tags" to the Tagging Configuration Options dialog box. If this is set, then when you do a "Remove Tags", all Picture Blocks will also be removed. If unset, no image blocks (including CoverArt) will be removed with RemoveTags. Note that sending an empty string to the tags as CoverArt will remove the CoverArt block only.
Version 2.1.0 -- Release 2006/12/28
Changes:
3. flac-1.1.3 now has a Picture block, so I've added image functionality. Note that once you've added a cover art image, the only way to remove it is by using the metaflac command line. Since the image block is not a Vorbis comment, it won't be removed by using "Remove Tags".