1-Find your favorite sound mod and downloaded.(war thunder live is the best site to find your mod)
2-Go to your war thunder main files ( you can use steam to find it : Right Click on War Thunder in steam -->Properties-->installed files-->browse.)
3-find your sound folder open it and create a folder as a mod ( you have to type it in as ((mod)) all lowercase)
4- open your mod folder.open your downloaded file and paste your mod files in mod folder.
5- go back over to the main file of war thunder --> find file (config.blk)--> right click on it --> open with --> and open it with notepad or text file--> scroll down to find part (sound)-->underneath ( spikermode) press enter ( add a line)--> and copy-paste this (enable_mod:b=yes)
6-save and you`re done
( for disable this just delete yes and type no )