[lch]

You can replace the game files, that's all. I've had a look at this a year or so ago and found out what the codec was that was used in the game files. The sound effects are raw data, the music is A-law compressed data. Because of differences in implementation of the algorithm, stuff might sound a little different when you hear it in the game, tho.

I did look for free music to replace the default Dom3 music by that time (which I have turned off all the time because I heard it far too often), but I didn't go through with this because I didn't find a lot of things that could be used well as battlemusic - one thing where the Dom3 music really stands out.