Fix artwork for albums

Boxrear is poster, primary is thumb instead of primary being thumb and
poster and boxrear is poster.

resources/lib/WriteKodiMusicDB.py

@@ -221,6 +221,14 @@ class WriteKodiMusicDB():
         self.AddGenresToMedia(albumid, genres, "album", cursor)
 
         # Update artwork
+        if artworks['Primary']:
+            self.textureCache.addOrUpdateArt(artworks['Primary'], albumid, "album", "thumb", cursor)
+            artworks['Primary'] = ""
+
+        if artworks.get('BoxRear'):
+            self.textureCache.addOrUpdateArt(artworks['BoxRear'], albumid, "album", "poster", cursor)
+            artworks['BoxRear'] = ""
+        
         self.textureCache.addArtwork(artworks, albumid, "album", cursor)
 
         # Link album to artists