Also, people can and should go to the firefox settings > Permissions and data > Autoplay and change the Default for all websites to "Block Audio" (at least).

You can set per-hostname exceptions if you like! CTRL + I > Permissions

> You can set per-hostname exceptions if you like! CTRL + I > Permissions

1. Thank you, that's very nice to know about.

2. I really wish this was exposed more directly, probably from the permissions button that is already in the address bar. I can't believe Chrome does this better.

You can access page info through address bar shield > connection secure > more site information too. It used to be easier to access from there, but they redesigned that at some point I think.