Change shutter sound?

[astanix]

I know you can turn the shutter sound off in the camera.
I want to change the shutter sound to a different one.
I've attempted replacing ShutterSound.wav and ShutterSound.pcm in the Windows directory and that didn't change it. I also deleted those files and the camera still makes the default shutter sound.

Does anyone know where the real sounds are for the camera?


edit: The default files reappear if deleted, if just replaced the new ones stay but the sound stays default.