thanks a lot for your replies. i don't suppose you know if album art is picked up by the dlink av server by a particular format? eg album.jpg or cover.jpg as an example?
I don't know the answer off-hand. I'm going to re-post this as an independent thread so others can follow-up. I also don't want to hijack the wishlist thread. . . 
original post: http://forums.dlink.com/index.php?topic=41109.0