Have you tried the "audio" button on the DVD player remote? Most DVD's come with more than one audio track and the "audio" button will toggle between them. Also, as Spiky said, they are generally able to be selected in the DVD's main menu. The DVD seems to be defaulting to a different audio track than you want, for reasons I do not know. However, what you do not seem to understand, is that DVD's CANNOT store information entered by the user through the DVD player. What that means is that ANYTHING you do to the disc on your player is NOT stored on the disc at all. Changing the settings of a disc on one player may continue to affect the playback of the disc in that same player, as many players have an internal memory that remembers the settings on certain discs, but when you play that disc in another player this disc will NOT have any changed settings, rather, it will play exactly as default. The disc cannot store ANY changes in it. So try selecting your audio in the DVD's main menu or use the audio button.