XBMC wont play DTS sound in files

I reciently built a HTPC, and none of my media files which are DTS play their sound when I launch them via XBMC. (although they do work in 3rd party players such as MPCHC).

Since This is a brand new computer, I am guessing that I might be missing some codec or something, but I couldn't find any direction on google or searching the forums. Any tips?

Using Windows 7 Professional and a relitively new version of xbmc. I have only installed MPCHC and Haali. My sound card is integrated in the mobo and its 7.1 on the asus P5Q Turbo.

Thanks for your help

Posting in the Windows Specific forum would be a better choice to get more focused support.

In the meantime read this thread to find out what you can do to help everyone with finding out what the issue is:
http://forum.xbmc.org/showthread.php?tid=42708

Thanks, turns out It was because of the version I was using, copied over the SVN and everything worked out.

So if anyone discovers this issue, upgrade your XBMC version!