I've tried it but it doesn't work.
Here is what I've done in windows that got me this problem:
1. Repair install
2. Used Windows Toolkit 1.8 to install extra themes. <- that's the smoking gun.
Now the problem has extended. Lets say I create a custom theme and I choose
Windows Ultimate Extras Pearl as sound scheme, I hear
Calligraphy sound instead.
Also, I've got some old downloaded themes which shows as if I have them but a quick look in the themes folder and I can't even see the theme files:
C:\windows\Resources\Themes
c:\users\my user\appdata\microsoft\windows\themes