video no sound

[elmatso]

Hi, I'm a complete newbe on this so sorry in advance.
My problem is as follows: I downloaded a number of movies wich play perfectly with the latest divx-player, but I just downloaded Mullholland dr with perfect video but no sound. The movies I previously downloaded stil run normal(with sound) so what am i doing wrong or wich codec do i have to download. Please help.
Thanx already

[Ndb]

Get a codec pack like nimo or ACE Mega here: http://www.digital-digest.com/dvd/do...oding.html#enc