Hello everyone! We've upgraded the instance to Mastodon v3.2.0. More details here:
https://github.com/tootsuite/mastodon/releases/tag/v3.2.0
There's an issue with playback of audio files that was introduced in v3.2.0rc1 which does have a workaround, but which we've not successfully implemented. We'll get this fixed as soon as we can.