How to broadcast audio over internet from browser

[raocah]

How to broadcast audio over internet especially from browser? With what technology? Is WebRTC a good candidate for that, alternatively with some tree or some kind of network structures in which every listener also seeds stream up to a number-of-users/data-limit? What network structures to use for that if yes? Or Websockets protocol should be used and the audio data should be transformed over a centralized server?