Alright, people have been searching for this audio codec 2000 thing, and I’ve been to the link people are giving. I got the codec, but now I don’t know how to make my computer use it. Could somebody tell me how to make my computer *use* this codec please? Thank you. 
For reference: http://www.moviecodec.com/topics/4364p1.html
it’s easy!
i don’t know what codec are you using, but get the acfilter executable from here:
http://www.free-codecs.com/download/AC3_Filter.htm
and double click it
Sorry. :P This is the thing I’ve already downloaded. I’ve opened it, but I don’t know how to make it work.
Eh, screw it. :P It’s working on DivX. We’ll call that good. :) Thank you for your time. :)
Okay, anybody else who has this problem, I opened the file with DivX (which knew to use the audio codec) and then played it with Windows Media Player at the same time and that made it work for Media Player too. :)
need audio codec 2000 for windows XP!!!!! PLEASE