"Audio FX" instruments/plugins not appearing, can't change

Restarting Ms4 doesn't seem to help. It's simply blank with the only options available being two plugins I don't recall installing, but none of the new Muse Sounds libraries or even plain old MS Basic, although it does use MS Basic piano in playback. I cannot seem to get this functionality back any way I know how.

Edit: Nevermind, god I'm dumb. How do I delete this? Inb4 I find the button after posting this