Hey there!

Could someone tell me how to create a new folder in the music one, like "epic battle", activated for tough monsters? If that s not too much of a script?

Fun!

I don't know if this is possible without a lot of effort, but there are mods like "http://mw.modhistory.com/download-61-13678", which can be customized in a lot of ways, it could just take some time. But it has a new battle music system which plays different music according to the enemies' hit points and also some special music for boss battles. Most features can be disabled via an ingame menu item, but I don't know if it is possible to have only what you want and not all the other features like individual music for different regions and places.