Hello Adam,
We had a demo that used the jQuery UI in our jPlayer 1.x series, but I have not got round to updating that demo for jPlayer 2.x.
This is the demo from jPlayer 1.2.0:
http://www.jplayer.org/1.2.0/demo-07/The jPlayer API changed in jPlayer 2.0.0 so you would need to change some of the events...
Like the old psuedo-event, onProgressChange is not a real event, $.jPlayer.event.timeupdate
Or use the timeupdate constructor option.
Best regards,
Mark P.