A very simple replace for default XP gain (combat xp, quest reward xp) “cash register” sound effect.
Online preview for Classic Fallout levelup sound on Fallout wiki!
How to activate:
Open Documents\My Games\Fallout4\Fallout4.ini in text editor (Notepad etc) and go to [Archive] section
add “, sound\” at the end of “sResourceDataDirsFinal=STRINGS\” for example: sResourceDataDirsFinal=STRINGS\, sound\, textures\
Unpack archive into \Steam\steamapps\common\Fallout 4\Data
final result: \Steam\SteamApps\common\Fallout 4\Data\sound\fx\ui\ui_experience_up.wav
Optional file – This replacer is also available for basic Level UP event. i.e. Not for kill xp or reward xp.