Try taking the same file and tagging it with a nice small JPG from a file...not the clipboard. See if that passes Emplode's check.

I'll just mention again that Emplode's checking had a bug in 2.0 beta 7, and that in the next release even whaling great AVIs of album art will be correctly skipped if they had valid ID3v2 headers (like centipedex's BMPs did).

Peter