As I told in a pm before I have never use the built in music scrape functions all my fanart I get it and put it manually and I dont know if something like "MusicPlayer.Fanart" exist if that exist I think xbmc could display the fanart from where is store in the thumbnail folder or if something like "Fanart.Image" would work. replace the texture path with one of those to see if works
Code:
<texture>Fanart.Image</texture>
or
Code:
<texture>MusicPlayer.Fanart</texture>
i dont know if this one exist.
if that doesnt work it would be impossible until those functions been add to xbmc because those fanart and all the thumbnails that reside there have an special naming convention it would be impossible to know the name.