Well, I've been looking through these forums for a couple of months and have found many answers, but the time has come to post my first question! I am new to home cinema and have got my setup working well. I have one area that I am not clear on. First of all, could someone clarify for me. Is DTS superior to Dolby Digital, or just a form of it? - I'm unsure of the difference.?? When I watch a DVD that has DTS sound indicated on the disc/box, I select the "standard" sound mode button on my remote and the message on the unit (Pioneer VSX-D812) displays a scrolling "Dolby Digital". I now know that it is putting out sound in 5.1, (and sounds very good), BUT I'm sure somewhere along the line I have seen "DTS" lit up on the unit. The manual says that DTS and Dolby Digital are standard sound modes, but perhaps there is something I am not doing right. Eg. last night I watched Master and Commander, which definitely is DTS encoded, but had "Dolby Digital" illuminated on the unit. Any help greatly appreciated!