Hi,
I just bought Underdog for my son and there is no audio when I play the movie. Sound stops in the middle of the main menu. When I play one of the extra features and get back to main menu then I have sound for the whole main menu but sound disapears again when I play the movie (no matter which language I selected). I have a lot of BDs and never had a problem. I also have installed last software update.
There is definitly a software issue with the Sharp BD player and this disk. Looking at other threads, I found that we are not the only ones to have this issue.
Sorry I can't help
(
I finally succeeded in making it work. I selected one of the Extras, then clicked on the Popup Menu and selected the option to go back to the movie and it worked. Sometimes, you have to do it several times before it works. Good luck!