Soundtrack 1.5 sound effects on Final Cut Pro X

Years ago, when Soundtrack was part of the Final Cut Express package, I had it installed and made much use of the included sound effects. I recently opened an old GarageBand project and found it was missing some sound effects which I believe came from either Final Cut Express or Soundtrack. Did these old sound effects get rolled in to a new package? I have Final Cut Pro X but they do not seem to be there.

I could just install the old software, but I wondered if perhaps these sounds were now part of Logic Pro or something else that replaced Soundtrack?