Maybe I could do a mod but I don´t think I have the time right now. Have to much work to do. But maybe I´ll get time to do this and then I will try and have it included in the mod section.
If I do a mod I will see if I can get the weapon sounds right too. I dont think it would be to much trouble to get it to work.
Anyways, its not a big deal I think to copy the files from the multiplayer demo to the singleplayer demo. But a mod is nice ofcourse..