this is my first post in the forum . i have a yamaha surround sound system with built in dolby & dts decoders. I am lookking at buying a new dvd player most probly the pioneer DV-676A. However this also has built in dolby & dts decoders. Does anyone know will I run into trouble? If the sound has already been decoded by the player and then sent to speakers that have also has a decoder what will happen. Will the audio still work fine. And will the sound output be correct?