Hello @calfish,
Some browsers, like Safari on iOS, won’t play audio unless the user interacts with the page first, like tapping a button. To successfully play audio in those browsers, you could add a “Press to play” button and start playing audio after the user tapped it.
From Apple’s Safari HTML5 Audio and Video Guide:
Note: On iOS, the Web Audio API requires sounds to be triggered from an explicit user action, such as a tap.