I encoded a movie with the most recent version of handbrake with the Apple TV setting which gives my final file a surround sound track. I opened it with quicktime and saw on my surround sound speakers control console (Logitech's Z-5500) that it was only playing in Dolby Pro Logic II. So i opened up the properties of the movie and saw that there were two settings for sound. The one selected was for stereo and the one under it was Surround (AC3) I unchecked stereo and checked surround but then the movie's sound became incredibly digitalized and you couldn't hear anything.. the display still said PLII and it won't allow me to change it to the Dolby Digital setting it needs to be on for surround.. has anyone had this problem? My computer is connected to the speakers via an optical wire. Thanks for all your help!