Hi I have a 2 hour MPEG that i have converted to VOB files, then used Shrink to get the file size down to fit on a 4.7 GB Disc, that works fine. I have purchased TEMPGenc 1.6 , but when i add the DVD files to start editing , there is no Audio, is this something to do with the AC-3 program ?? I downloaded AC-3 but cant get it to work as it wants a serial number to start the program, i tried using the serial/license number that TEMP sent me when i purchased the 1.6 but that doesnt work, where do i get the serial number from and is this whats stopping the audio anyway ??????