Error decoding audio file in Safari

[garrill]

It looks like loading in audio files in Safari version 15.0 is broken (I am using MacOS 10.15.7). The Pizzicato home page gives errors for each MP3 file it is unable to load:

Error decoding audio file ./audio/acoustic.mp3
...
Error decoding audio file ./audio/countdown.mp3

and finally

18 × Unhandled Promise Rejection: EncodingError: Decoding failed

The sound wave and microphone demos still work, just any demo using an external audio file is broken

[numerized]

HEllo here, I'm on Safari15 and I don't have any issue.
I have issues on my own files but not on the pizzicatojs page.