Sound not being present in config.BLK

I am trying to install a sound mod for the first time,every single tutorial is the same,saying i need to do something in the sound part of the config.BLK file,but i can’t because there is no sound section it it? How do i install the mod? Where do i find this section?

It’s a config to add in the config.blk (located in the main folder of war thunder.

You must add this line:
fmod_sound_enable:b=yes

in this paragraph

sound{
speakerMode:t=“auto”
enable_mod:b=yes
}