Audio problem

i have been backing up some of blu-ray movies to my pc hard drive using anydvd, the rips are fine but when i go to the folders where the files are and try to play them back with power dvd8 ultra iget the picture fine but there is no sound when playing back it does not do it with some of my backups but it does it with chicken little, meet the robinsons, i robot, abba the movie, santa clause 3, and batman the 1966 version:(

It might be PowerDVD problem.
Try Arcsoft TotalMedia Theater.