I am somewhat new to backing up my videos and have more of a question than a problem.I use decrypter and shrink for most of my backups and can usually play them back from the hard drive with power dvd. When I had to make another back-up of Predator, I noticed I had no sound. Power dvd said it was not available.Nor could you hear it with the latest version of shrink in monitor. I used DVDXcopy to back-up because I knew it would work and it made the copy with sound. But still Power DVD said no audio playing back from hard drive. I went ahead and used shrink to make another copy and all the disks played in my computer and stand alone just fine. I did notice that it was rce protected for zone one, But predator was the first one that I can't play from the hard drive and not have sound. Any enlightenment here?