It works under Firefox 25 and Chrome. Should also work with Firefox 23 and 24. The others I have not tested. But some of them lack audio support. And I would no

It works under Firefox 25 and Chrome. Should also work with Firefox 23 and 24. The others I have not tested. But some of them lack audio support. And I would not try Firefox beta. They have changed the audio API and probably fixing bugs right now. I had problems to get it running under Firefox 25 after they implemented the web audio API.