No Sound On A Downloaded Movie

I have downloaded several movies from K-Lite. They vary in quality, but there are no real problems. Then I downloaded "The Pianist". It's an .AVI file, but when I tried to play it, I get good picture quality, but no sound.

Might the file type be subtly different from the normal .AVI? Do I need a Codec?

do you have the k lite codec pack, if not unistall all ur codecs download the pack and install it, i think that should do the trick, hopefully someone can back me up on this

Yeah m8! also included in the kazaalite codec pack is a prog named
GSPOTi .If u come across a movie which u cant play,open it with gsopt
and it will tell u which codecs r need for that file. :D

Thanks, guys! The K-Lite codec pack download/install fixed the problem. :)