I have about 600 albums that have artwork that is visible in iTunes.

I linked them into Media Center and they play just fine. However about 30 of the albums don't show their cover artwork.

Where did it go?Is there some undisclosed limitation on the resolution of the JPEG used for the album cover?

I think all of my files are no bigger than 600x600.

I also wonder how Media Center finds artwork for the wallpaper inside "Now Playing" when the same album has no artwork in the Music Library.