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
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: