This mod replace all the BGM of the game with the BGM of GuP and GuP Der Film!
Here is the Project GuP.
This mod is based on the BGM used for Project AGW.
So this mod feature the OST from "GuP" and "GuP der Film"
don't hesitate to give feedbacks in the comments. ;)
Especially if you encounter any bug.
Here is a demo:
1) Directly unzip the ZIP into your War Thunder/sound/mod folder
2) Go into your config.blk into the War Thunder folder
3) Add into the "Sound" section under the already existing line :
5) Enjoy! :D
Here is the way to install in video(thanks to ClariceP)