So, I'm starting to author my own DVDs now that I have a DVD-burner; what I want to do is encode my video files from stereo to 5.1 surround. When using Nero recode to convert my video files to Nero Digital files, in the box to the right of the video preview screen, where it has the "Audio #1" options, there is a checkbox for "stereo" and "5.1 surround." When I load a file into the program, the stereo box is checked, and it will NOT let me check the 5.1 surround box instead. How can I encode my video files to 5.1 surround, or DTS, for purposes of burning them to a DVD??? Thanks so much for all of your help... Regards, -Kevin.