Often, I am listening to music of my choosing. Is there a way to preemptively turn off all sounds originating from websites? I don't want to click the 'mute' button once the page loads. And sometimes, it won't even have a mute. :-/
I use Chromium and FireFox.
I use XFCE, so my menu options are different. Is this a gnome-specific utility?
Or, what is the command for this utility?