wll if their dvdrips, then i would assume that the are avi's or some other common format, the depending on what program you are using you can play with the sound settings, I'm at work so I'm not too sure about this but, i think in quicktime you get an equalizer and you can mess with that to get the right sound, i know definetly on itunes, you can watch videos there, and you can use an equalizer there for sure, just look for an equalizer in whatever program you're using, most should have one, and just lower the base and up the trebble, and play with the settings, find the sound you want