Hi David,
Gizmo views are customizable via Options/Media Network/Advanced selecting "Customize views for Gizmo, Webremote, and Webplay..."
I've used the view-building tools and rules for file display in this menu to set up some very handy Gizmo menus: separate sorting for high res, lossless, and mp3/mp4; random album sequences for browsing; music sorted by intensity and BPM; classical music sorted by composer and instrumentation...sky's the limit provided you have a well-tagged MC library.
and +1, Gizmo is fantastic.
Phil