QuickTime 7.3 - no audio on .avi file (I can't hear audio)

Hey Folks,

I can't hear any audio on the .avi file - I downloaded DivX player and I still do not hear any audio... A message will pop telling me I need to download the components but I have no idea what I need to download..

Here's the error screenshot: http://i16.tinypic.com/6z3ubkp.png
And here's the URL it brings me to when i click continue: http://www.apple.com/quicktime/resources/components.html?os=OSX&ctype=61646563&c subtype=6d732000

Kindly let me know.
-joey