OK, after using ReJig to shrink the MPEG size, I now have a video file and an audio file. How do I link the thumbnail to use both? I can only see how to link up the thumbnail to the video. Thanks in advance.
If both files have the same name (except for the file extension of course) and both are in the same directory, when you drag the mpeg file into DVDA, it will include the AC3 file automatically. You can verify this by looking at the object properties - click on the thumbnail, and the object properties should show both a video and audio file. If they don't, then just click on the "..." button for the audio file and select the correct file.