Ok I have just my first new entry level available receiver. It's a Yamaha RX V383. I'm a little confused. And I know I'm being a noob. But we all start somewhere. If it has so many different settings or Dolby true HD, pro logic 2, DTS X etc, how do you select these on the amp or are they played depending on the source. For instance it's easy to change the program ie sports, action game, Hall in Munich etc, but how do I know if it's playing on the best setting like true HD? It doesn't tell you on the information panel on the receiver. So how do I know it's playing in true HD or pro logic 2 or something else? Any help would be greatly appreciated. Thanks, Bob.