How to change screen lock/unlock sound using a Pin Code lock?

[Netherscourge]

I use a Pin Code to secure my phone.

Whenever I lock or unlock my phone, it makes a "click" sound. I want to change that sound to something else, but there doesn't appear to be any options to do that.

If I go to Settings -> Sounds and notifications -> Other Sounds, the only option is to Select or Deselect the "Screen lock sound". But there is no option to change what the sound actually is.

I can change the lock/unlock sound if I don't have any passcode enabled, but I can't find an option to change it while using a passcode.

Anyone have any ideas? I want my phone secured, but I also want to change that annoying click sound to something else.

Thanks.