Walmart.com has the largest artwork of any of the sites. Highlight an entire album of songs in iTunes, then drag and drop from the W-Mart site to change them all. It's a bit more rapid than it would ...

Topic pretty much says it all, really. I have an mp3 player that doesn't seem to recognise id3 embedded art, but picks up on a named file "folder.jpg" (I gather this is what Windows Media Player does) ...