QUOTE(Florian @ Dec 6 2007, 13:41)

Do they show up in the beta of foobar2000 0.9.5?
Yes. Is there a way to remove the cover using the latest foobar2000 beta?
QUOTE(Junon @ Dec 6 2007, 13:53)

They might be stored inside APE tags. Make sure MP3tag is allowed to read both ID3v2 and APE via Extras --> Options --> Tags --> Mpeg.
It's already set to read them, but the cover doesn't show up. I have tried adding a cover image and then removing it, but the original embedded image is still in the MP3.