I have a series of Dual Audio OGM's with 2 Audio Channels (which i have labelled Primary and Secondary) and a subtitle channel. I use TMPGEnc Plus to encode the video and primary Audio channel together, and then I use the program VirtualDubMod to extract the secondary audio and subtitle streams. The problem is, when i do this, the length of the secondary audio channel is different from the primary, so when i instert it into my DVD authoring program, the secondary audio is always out of synch with the picture. Is there a program that will demux both audio streams and the video stream at once. I am really frustrated so please tell me how i can fix this problem.