Where can I find the Mountain Lion (Notification Center) notification sound? I've been searching around for the little sound (the default one) when a notification is presented (on Mountain Lion Notification Center) but I can't find it. Example: http://d.pr/a/P5xo (sound recorded)
Any ideas? Thanks!
In OS X 10.8 it's called burn complete.aif (or burn failed.aif–they are the same sound) and is found in /System/Library/Components/CoreAudio.component/Contents/SharedSupport/SystemSounds/system/. 

To get into CoreAudio.component, right-click the file and select Show Package Contents.