Pinnacle Studio, Edition including Avid Xpress and LiquidPost all your Pinnacle Studio or Edition problems, queries and tips. Incorporating Avid Xpress and Avid Liquid.
I needed to do the exact same thing. But rather than faff with DVD editing. Just put the whole track as a menu. It would auto-loop then! You can still have a menu and just have the loop bit as menu 2.
If you already have the dvd just push repeat on the dvd remote control! crude but effective, Otherwise at the author stage simply set end action to loop