Ah! I just saw it! It's a browser setting! I was able to allow autoplay on DEV from the address bar. You must have given permissions to Firefox to autoplay on DEV, and then the demo started.
...Which is funny because technically the audio is not on DEV, it's on CodePen, and the audio file is not on CodePen either but on my personal site... so it's kind of a stretch there from approving autoplay on DEV to playing audio hosted on an unknown source.
My heart skipped a beat, when the sound turned on. :D
Hehehe :P
What browser are you using? I cannot get it to autoplay :(
I used the latest version of Mozilla Firefox on a macbook.
Ah! I just saw it! It's a browser setting! I was able to allow autoplay on DEV from the address bar. You must have given permissions to Firefox to autoplay on DEV, and then the demo started.
...Which is funny because technically the audio is not on DEV, it's on CodePen, and the audio file is not on CodePen either but on my personal site... so it's kind of a stretch there from approving autoplay on DEV to playing audio hosted on an unknown source.
Ahh... Sometimes it's "funny", how many things affect the behaviour. Congrats for finding the solution and for the dancing pizza slice 🙂