i was one of those. luckily i didn't have to re-do too many albums. itunes is still my tag-er of choice. itunes is even my embedd-er of choice for artwork. the trick with embedding artwork into an album using itunes is to actually copy and paste the artwork into each file (do not use the 'get album artwork' menu option this does not embed) by selecting 'get info' and checking the box next to 'artwork' and then paste your artwork into the blue-highlighted square.