Listen live either from the Listen Live link on this page (which opens a pop-up player) or click the Listen Live link and download a "playlist" for another player by clicking on the appropriate icon. The stream is buffered which means that it continues to play for some time even if the signal is lost. Incidentally, it also adds a delay so don't be surprised if presenters' timekeeping is a little off!
Click the Listen Live button above and a pop-up page will open. Press play and streaming should start and then continue while you browse on other pages until you stop play.