Hi Kieth,
Sorry for the long delay, my first re emendation would be to update to theatres firmware. We have made some changes to the customization and startup options. There is video detailing how to update the firmware on our instructional Fidel's section near the bottom. Once your running s1.73, go into settings, MPD, check update MPD at startup. If you get stuck anywhere might be best to email me at crice@bryston.com (feel free to post anything in our email correspondence).
Cheers,
Chris