No audio on playback

just starting to use back up software. i have a I/O magic dual format dvd released 03. i used dvddecrypter(with the fox) to bring up the dvd info from the video tsfile…no other file showed up on my drive when using clone dvd. is that why i don’t have any audio on playback…no audio folder. or is it because my burner doesn’t allow that feature killer?

any input is helpful…thanks

to make it all the more strange…when the opening menu comes up it has sound …but when i select the chapt i want to see no audio