Audiobooks

Hi

I have quite a large selection of audiobooks and wanted to add these to xbmc. I have set up two smart playlists - one for audiobooks and one for all other types of music.

Viewing of my 'music' playlist is perfect with all local artwork and bio's displayed.

However in the audiobook playlist only the album artwork is shown all the artist artwork and bio is not picked up. Now I organise audiobooks and music in exactly the same way so I don't think thats a problem. Would it be that I have audiobooks in a different folder to music?

I can't rely on scrappers because in this case the artists are authors and I have manually selected art and created nfo's.

Thanks for any help/input