sound fluxuates on DVD play?

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http://forums.fedoraforum.org – I am playing a legally purchased, factory made movie DVD, but the sound is going up and down, too low to hear up to super loud and back all throughout the movie. The meters on my volume controls do not change, just the way I hear it changes. I am assuming it is some type of DRM, but is there any way around it? Other movies and shows work fine, all other sound on the system works fine, the video on this one works fine, and it does this in both mplayer and xine. I'm in Fedora 11 and the system is using pulseaudio (I can't find a way to get rid of it without it wanting to rip the rest of the system out, too). (HowTos)