After updating to the second beta of OS X Yosemite, I noticed that when pressing the volume up or down on the keyboard, it no longer makes that "clicking" noise. I tried it on my macbook and it was the same problem. Does anyone else have that problem? I hope Apple didn't purposely remove that sound because I find it very annoying to adjust my volume, and not know how high or low my volume is. ***NEVERMIND*** For some reason, I had to enable it in "Sounds" in system preferences. I just ticked "Play feedback when volume is changed" However, It sounds really different. Guess I'll have to get used to it.