[PhilYHC]

i have solved this for myself which i touched on in another thread over here:

https://forum.kodi.tv/showthread.php?tid=318634

i removed all my music from the WMP library, and removed my album folder also.
i then deleted all the annoying hidden artwork files "AlbumArt" "Folder" and "AlbumArtxxxxxx"
i then told my software (MediaMonkey) to save all covers as cover.jpg and then i added this to advancedsetings:

<musicthumbs>
<remove>folder.jpg|Folder.jpg</remove>
<add>cover.jpg|artist.jpg</add>
</musicthumbs>