Where is the OS X Volume Change Feedback Sound File located? I upgraded Yosemite, and turns out they changed the "pop" sound that plays when you change the volume. I have another Mac, which is on Mavericks, and I would like to get the old sound back.

I saw Where are the Mac OS X alert sound files located?, and it is NOT there in Macintosh HD ▸ System ▸ Library ▸ Sounds

Any help would be appreciated.
The volume up/down feedback audio file is called volume.aiff and is located in:

/System/Library/LoginPlugins/BezelServices.loginPlugin/Contents/Resources/