You open the Music folder (or Sounds, I don't remember) with MafiaDXTractor and there are a lot of music files. I think, in the form of ogg. You encode your Mouzon to ogg with any converter capable of this, and replace the files, naming them the same as the ones you replace.
Andolini And the fig through this prog? It is so easy to replace that muses. files are available and are not encoded in any special. format like Need For Speed ​​™: Underground 2 or Need For Speed ​​™: Most Wanted (2005) or Need For Speed ​​™: Carbon?