Problem - Burning a disc with no audio after editing

[Snake Plissken]

Just bought a PVR-150 tv tuner card which comes with Moviefactory 3 SE software. If I create a project and import MPG files and burn to disc, everything is okay. The problem is when I edit the start or end points of a clip, the clip plays without sound when the project is burned to disc or hard drive. When I preview the project before burning the sound is okay. I've updated the latest patches but this problem persists. Please assist if possible.