(Sorry for long delay in reply -- thanks for your response)
I'm running under Windows. I rebooted the server where trio/jreceiver/arm(for ARF serving only) run and then the display worked fine for several days. Today I started experiencing the problem again. When I would switch radio stations, I wouldn't see the new station on the display (but could hear it.) Likewise, switching to Queue mode resulted in seeing only the info from the last song I had played in that mode. Rebooting the Rio itself seemed to correct the problem this time.

Side note: Song title scrolling doesn't seem to occur in one of the two layout settings (universal, I think). I'm not sure if that's by design.

-Judd