by countries: http://www.radio-browser.info/webservice/json/countries
by languages: http://www.radio-browser.info/webservice/json/languages
http://www.radio-browser.info/webservice/json/stations/bycountryexact/
http://www.radio-browser.info/webservice/json/stations/bylanguageexact/
http://www.radio-browser.info/webservice/json/stations/bytagexact/
closed