I have a friend who made a video in Roxio VideoWave 7, he put it on an external drive and wants me to burn it to a DVD. When I play it back on my computer, the video works fine, but the audio is all messed up. So I tried burning it and when I play it on my dvd player, there is no audio (but if I play the same disc on my computer, the audio is messed up)

Any suggestions?