GUYS I FOUND A WAY TO EXTRACT THE ORIGINAL BANK FILES
goto C:\Program Files (x86)\Steam\steamapps\common\Subnautica\Subnautica_Data\StreamingAssets

open one of the .bank files with a hex editor

make a backup of the files you want to edit!

in the hex editor search for FSB5

remove everything before FSB5

save it as "name".fsb and in a different location than the original

download the files and the dll`s from HERE [zenhax.com]
extract both folders

move the dll`s into the folder with the two *.exe files

and now click and drag the previously saved .fsb file onto fsb_aud_extr.exe

let it extract some time and

BOOM

you have your sound files!

sorry if here are any mistakes, my englsh isnt the best.