I have this integrated audio chipset. Its a 7.1 channel integrated card. I just wondering if this supports Dolby Digital sound? If so, how do I get it to work, or is it automatically applied? All I get choose in my sound options, is 2/2.1, 4/4.1, 5.1 and 7.1 speaker modes. I remember seeing one time something about Dolby digital in my audio options, but after the last update, its not there.