additional playlist information?

Hi, Is it possible to add data returned from playlist_jstree.xml? Item title is useful, but I tend to sort by artist, then title.

So.. would it be possible to enhance playlist_jstree.xml to return additional meta information: artist, genre, etc... and enhance the ajax-based client to optionally display/sort by the additional information? Thanks in advance!

ps.. new http interface in v1.2 is a huge improvement over the older versions!