Alright, after trying out multiple OSes like Puppy Linux and whatnot, I think I'm settled on Lubuntu, and have it freshly installed.

A few moments ago I just tried to play a DVD of *Avatar: The Last Airbender*, and playback was horrible. It was able to start up the DVD, but for some reason had very blocky graphics, seemed to be playing extra fast, and had a weird sound-effect of a strumming rubberband. When I tried selecting play it simply froze up.

Now, I know it isn't a hardware issue since I've been able to play DVDs on my laptop before, so Gnome seems to be the problem. I'm a newb, but I suppose a "codec" or the like is missing? What can I do to get Gnome up and running well?