My receiver won't detect Dolby Digital or DTS input. It says PCM is being input no matter which dvd I try. I've tried DVD's with DD and DTS. Right now I am using my PS2 as a DVD player. I am using the toslink connection for the audio. I have heard that it can ouput Dolby digital at least, but im not sure, can anyone confirm this? I can get sound, just not DD or DTS. I've tried all the settings on my receiver. Is my receiver messed up? I did buy it used. It is an Onkyo TX-SR600. Thank in advance.