I'm having a bit of some trouble with this dvd. I have encoded it many times and I haven't been satisfied with it yet. My problem is concerning the audio. I'm just backing up the main-movie only. I ripped it with DVDdecrypter and tried both dvd2one and dvd shrink for encoding. I removed all the unnecesary audio options and picked the first audio option. The first audio option is DTS 6-ch English. I get no sound using DTS, but when i add the AC3 6-ch English i do get sound. What is the difference between these two audio options? Has anyone else backed up this movie? If so what do u recomend on the settings?