The plugin handles music fanart in this way;
1. It takes all files you have in the /thumbs/Skin Fanart/music folder and adds to the SQLite database (files not already in the database).
2. It then list all artists in your MP MusicDatabase and loops the artist and tries to retreive fanart from htbackdrops.
NOTE;
If you have alot of local fanart already then perhaps the scraper will not retrieve any file from htbackdrops because the Max image count property is perhaps already "filled".
The local fanart that you allready have. Put it in the /thumbs/Skin Fanart/music folder. make sure the filenames matches the artistname. To have more than one image per artist add numbers after the artist name. Like "Madonna 01.jpg".
I saw in a earlier post it was not recommended for large collections, is this still the case? (By large im talking about 300GB+ of MP3's
However I have some spare time so I'm happy to give it a go unless you think it will die a horroble death.