I have been burning for a while now and after all these months, I am wondering: "Have I been decrypting correctly?" I was told with the decryption process, you set the mode to file and decrypt. After looking around, I see that you should set the mode to ISO read, then ISO write (based on a dvd that's less than 4.36G). The movies burned in file mode, some work, some don't. Some play in one dvd player, but not another. To make everything fair, I purchased 3 Philips DVP642, so all the rooms have the same dvd player, but still, some work, some don't. Plays fine in my computer. Have I spent all these doing it the wrong way???? If so, then I have alot of rework to do.