audio codec Tag 8192

http://www.divxmovies.com/faq/

go to the link above and go to 4.4 of the FAQ in the 3rd or so paragraph down in that section you will find a list of codecs and the links to download them. once installed jus play the movie through divx player and it will work!
i had the same problem!

Problem is, once the AC3 is instaled, WMP10 stops working properly... any ideas?

thank you.

I would love to help out with the WMP10 problem you seem to be facing but i have not had that problem mine seems to function as it should. what is different with WMP10?

Try using ACEMCP601PRO.exe, it worked for me.