Hello, I'm fairly new to the home audio but watch alot of dvds and play ALOT of games. I am VERY interested in upgrading from regular speakers to Achieving Dolby Digital Quality. I was wondering what it would take to achieve that quality. My DVD player says Doldby Digital, My reciever says Dolby Digital, have speakers around the living room with a subwoofer and was wondering how do I aquire it. Do I have the set-up already or do I need to get more components to gain Digital Quality. Thanks.