The digital audio output of your DVD player is not configured to output dts. To change the mode to allow dts streaming, stop the disc and remove it from the DVD player, then follow the instructions below depending on your DVD player:

• RDV-1045: With the disc stopped or no disc loaded, push "Set Up" on the remote control for a few seconds to display the Setup menu, then select the Audio tab (speaker icon). Change the Digital Audio Output to Stream/PCM.
• RDV-1040 / RDV-1050: Push "Choice" on the remote control for a few seconds to display the Setup menu, then select the Audio tab (speaker icon). Change the Digital Audio Output to Stream/PCM.
• RDV-985 / RDV-1080: Push "On-Screen" on the remote control and select the Preference 2 tab. Then change the output to Stream/PCM.
• RDV-995: Press and hold the "shift" button and press the "choice" button to access the on-screen display. Select the Audio tab, and change the output to Stream/PCM.

Please note that you need a Dolby Digital/DTS processor and amplifier or receiver to enjoy 5.1 surround sound.