I was just wondering which codecs I should install. I have FFSHOW, Xvid, and AC3filter installed. I found out that these 3 are the main ones and can play almost all video types. I also found out that FFSHOW and Xvid can work individually. I was wondering what is the difference between FFSHOW and Xvid since FFSHOW can play Xvid videos. Is there a point in having both of them? Thanks all!