In Reality Composer, how can I stop a sound?

Question

Say I have 2 buttons, each triggers a piece of music.

How do I have Button A stop the music that was triggered by Button B and vice versa?

Not seeing the option for Sound, Music, or Ambience.

Answer 1

Playing/Stopping audio with one 3D button

In macOS RC, create 2 scenes – first with stop button, and second with play button.

Then, apply the Tap trigger and Change Scene action to custom Behavior of the 1st scene:

And apply the corresponding triggers and actions to 2 simultaneous behaviors of the 2nd scene:

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Now, when you tap the buttons, sound plays/stops as expected.