Hi, I just tried editing the Sounds.plist to try to add a keyboard sound slider, as I find that typing without sound lacks feedback, and sometimes it is just too loud (typing in quiet room can be quite irritating), so far I just manged to get a slider in there but it always crashes back to the springboard when I try to use it.
Here is my code:
I think the problem is that I'm not using the right name for the last string, I tried some combinations but none work.

Any help with this is greatly apreciated.