Location of Jingles folder?

I can't find the location of the Jingles folder that's displayed in the FCP Sound Effects browser. I tried /Library/Audio/Apple Loops/Apple/Final Cut Pro Sound Effects and ~/Library/Audio/Apple Loops but no luck. I can find most of the others--Ambience, Animals, Explosions, etc., but Jingles, Textures and Stingers aren't there. Anyone know where these live? Reveal in Finder is greyed out within FCP and Finder searches don't return anything.