the new "ding!" notification sound in Yosemite really gets on my nerves (and I don't like any of the default ones), I would like to add (or replace one of those with) a custom sound I have.
I found out a dirty solution is digging into
and replacing one of the default tones files with my own, converted to .caf (core audio file) using the afconvert command line tool.
Is there any better way of doing this?
EDIT: Due to the new System Integrity Protection feature in El Capitan, the previous solution does not work anymore (without disabling SIP). Is there any way of adding a new notification sound?