Hello @Lucious_Jansma, as an addition to the answer of @Gabriel_Dobrzynski:
- Add a audio listener component to an entity (to hear the sound)
- Add a sound component to an entitty (to play the sound)
- Add a sound file to the slot of the sound component
- Check auto play and loop to start the sound when the game is loaded
More information about sounds can you find on this page: https://developer.playcanvas.com/en/tutorials/basic-audio/