I bought a new Onkyo TX-SR 601 recently and it has no problem decoding Dolby Digital, but it's not detecting DTS. Can anyone tell me why? My DVD player can play either DD or DTS and I believe I have it set up correctly, so is the receiver. According to the receiver manual, it will let me choose to listen to either DD or DTS, but it shows only DD. Yes, the DVD I am trying to listen to DTS has a DTS logo on the cover. Thank you.