There is a tab for called "Starred" that sits right at the top and lists all the tracks that were starred by the user. The utility of this extremely limited at this time. For users who have large libraries (which I would guess encompasses the entire Subsonic community) may have several thousand tracks that they have starred. It would be nice to have a link (at the top) that says "Add XX tracks to the queue". XX could be a drop down list with several options like 10, 20, .. 50.
Another related option and perhaps even more useful would be to add a "Starred tracks only" check box next to Shuffle Play. That way, the user can choose genres, years, etc with the added filter of starred tracks.