Here's a cab file to do the install automagically for you. I used the sounds from Diznario.
NOTE: This will replace the entries for RegEntry 3 if you already have a 4th sliding sound setup. This also makes RegEntry 3 the Active one. So just install the cab, and then slide open, slide closed, and enjoy...
Thanks BigBHaller for the precise steps (made creating this CAB easy), and thanks Diznario for the sound files.