I have a Sherwood RVD 7090 RVD/RDS- Dolby D and DTS Ready. I have a Samsung DVD F1080W player,and a Samsumg LCD 1080 HD ready TV. The DVD has an HDMI lead to TV and a Camridge Audio coaxial to Receiever. I can get DD, but when I select THX or DTS on the DVD Set Up, a message appears on the TV saying "HDMI not supported" and I get no sound from the receiver. It seems the receiver is waiting for a DTS signal from the DVD player? Dolby Digital is fine with the same leads. Any ideas on how I can get DTS sound????