Thanks to jonwd7 and Systek
This file replaces the cash register sound upon every XP gain to a blank audio file, thus making no sound.
Step 1
Go to: \Documents\My Games\Fallout4 open Fallout4.ini
Find sResourceDataDirsFinal=STRINGS\ edit it to sResourceDataDirsFinal=STRINGS\, sound\
To use this with other mods you would simply add the corresponding dir. like so: sResourceDataDirsFinal=STRINGS\, sound\, textures\….
Step 2
Drop the file into \Steam\steamapps\common\Fallout 4\Data
Play!
