Works as advertised: peace! Rated 5 out of 5 stars

Unlike intoxikator I did not think this author was in Google development. I usually open "news" links in a background tab and I'm annoyed when one of them (which one?!) starts blaring. Now they just wait until I get there. Nice; quiet.

BTW, I'm on 13.0.1 with no problems.

This review is for a previous version of the add-on (0.2.91).