I would suggest double-checking your speaker connections and your digital connections, too. Make sure you have the correct optical input assigned to your DVD player. Also, try cycling through the listening modes and surround modes. It's possible that you've got it set to External In (analog multichannel inputs) or something else. Finally, check the volume at the receiver and via the remote. There's a Zone 2 setting on the remote which won't turn up the Main Volume. BTW, the Test Tone volume is automatically set regardless of volume settings or inputs.
Good luck,
Jason