I bought my wife the Aaron Neville DVD of his CD Devotion. This disc will not play the audio when I put it into my Panasonic RP-91. The main menu will not even display the option for the DD or DTS audio. All the other menu options are displayed. When I put the disc into either my old Panasonic A310 or the DVD player in my laptop the menu option for audio is displayed. The audio works just fine in either of these but not the RP-91. I need it to play it in the 91 because it is connected to my Home Theater setup. Any suggestions or advice is appreciated. I've already exchanged the disc once to see if I had a bad disc but the same thing happens. I have not had any problems with any DVD's played in the RP-91.