I used DVD Shrink to clip some scenes from my favorite DVDs and then compile them onto one DVD as a demo disk. I am using the full version of Nero 6.6. However, despite selecting AC3 for the sound option, when I play the discs in my DVD player, my receiver indicates Dolby Pro Logic. The sound is definetly not Dolby Digital. Why is it not picking up the Dolby Digital tracks? Anyone know what I might be doing wrong. (I do have the Dolby Digital plug in for Nero.) Thanks. -Gary.