No sound after I burn drama to DVD

[mommie Alice]

I finally got the Nero 6.6 working on my new computer but now I have no sound when I played it on my DVD player.

I remember same thing happened when I first installed in my old computer but I don't remember what I downloaded to get the sound.

Please help. What can I download to get the sound?

Thank you so much.

EDIT: I downloaded AC3 filter as suggested in Tech: Troubleshooting and help and it worked.

Thank you anyway.