I just boutht a new DVD today (The Ring). I selected DTS from from the DVD menu and the movie plays without sound. I have the DVD set to bitstream. With the movie playing I tried using the 'Audio' button and it pulled up a menu. When I selected DTS a caption appeared that stated 'DTS decoder needed'. However, the DTS insignia is stamped right on the DVD player. I have a Toshiba SD2800. Any ideas?