To answer your specific question:
File > Open URL...=========================================================================================
For expanded information you can refer to the WIKI where you will find links to explicit instructions regarding the topics:
* Web Media Radio,
* Play a Web Media Station
* Find Web Media Stations
* Add and Save Web Media Stations
* Add a Web Media Station to a Playlist
* Proxy
See:
http://wiki.jriver.com/index.php/Web_Media_%28Radio%29AdvancedAnd, if you want to really get serious about it you can use a packet sniffer for the purposes described below. While there are many easily obtained packet sniffers you will have a difficult time trying to locate one specifically designed for filtering the URL's for online audio streams.
URL Snooper is one designed for that purpose and is the one I use. Go to wikipedia.org and type in URL Snooper and you will see its home page. The designer best describes its function.
Many links to streaming audio and video that you come across on the web are hidden behind Javascript or Activex scripts. Because of this, it is sometimes very difficult to figure out the actual URLs that correspond to the streams being played.
URL Snooper provides easy solution to finding the URLs for all streams by watching network traffic and identifying potential URLs, especially streaming media URLs.