It looks like it's all done in the javascript, so, yes. (As far as I can tell the only thing it's fetching are the mp3 files, it's not talking to a backend.)

It looks like it's all done in the javascript, so, yes. (As far as I can tell the only thing it's fetching are the mp3 files, it's not talking to a backend.) Edit: you're probably asking if it has a free license; that I don't know.