There is a way to play sound alerts. It’s a bit of a hack, but it gets the job done.
Set the music player to be 1px by 1px (or something else not particularly visible). Set a dynamic link for the mp3 link and reference a custom state on the page. Set the music player to auto-play when a new song is set.
Then, change the custom state to the url of the mp3 you want to play based on the specific conditions you want to play it. And, have it toggle between that mp3 sound and another “blank” mp3 so that the url is changing and therefore it’ll play the sound each time since it’s set to auto-play when a new song is set.
Note - I believe the easiest way to manage the toggle between the mp3 urls is to include 2 steps in your workflow to play the sound. Have the 1st one set the url state to the “blank” mp3 url. Then, for the next step have it set the url state to the correct url for the mp3 for the sound you want to play.