Hey, to just play sound you could "Create Sound 2D" after branch check if we have enough materials. If you want to stop it when button is released you need to "Spawn Sound 2D" so we can get a reference and then turn it off on release. drive.google.com/file/d/1_gYF5hDBFiy1HFGu2JELm6y5-oqqJdSY/view?usp=sharing But don't worry, we will do sounds for the whole project eventually :)