WMP v12.0 album Art

I have all my music in Files attached with cover art, the problem is WMP docent play album art in some of them.

I have update Windows.... I look in few tutorial but it docent feel right.
Am sure here somebody can help me and other with same problem am facing.
WMP12 is not reading the cover.jpg or the embedded image, so I'm left with thousands of albums with no album art in the column. When I play a file, showing Now Playing, but the column album art stays blank.

Thank you!

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