After renewing my subscription, I saw the confetti and realised I couldn't hear the nice piece of audio that usually plays. I figured it was muted, so I turned my laptop volume up but still didn't hear anything.
I'm using Firefox 66.0.4 for Mac. Here's the browser console:
And here's the source of the problem:
Enabling autoplay fixed the issue.
It's a real shame. I know there's not much you can do to make the audio auto-play properly like it used to. This is an end-user browser issue. But maybe it would be possible to have a little play button with the word "surprise" or something, so that a user interaction triggers the audio and we can hear it if we want to without having to dig into the brower's page settings?