I've been messing aroudn with my settings and I'm wathcing a DVD on windows media player. When i go into the sound options here it gives me the Mono, Stereo and Dolby Sorround option but the 2 speaker output bullet is checked and i can't change it. below it i see the 3d sound, 4 speakers, 5.1 speakers and enable S/PDIF options but they are greyed out and i can't access them. Might this be the root of my problem?