When I try to download a DVD movie off of Lime Wire it al mpst always is a avi file. But when I try to preview the file Windows Media Player 10 says it cannot play the file. I do not think the files are corrupt because the media player will not play any of my avi files. But it says in the player's manual that it supports .avi files yet it will not play them. Why not? How do I play avi files?