try these......
mplayer rtsp://rmlivev8.bbc.net.uk/farm/*/ev7/live24/radio2/live/r2_dsat_g2.ra
mplayer rtsp://rmlivev8.bbc.net.uk/farm/*/ev7/live24/radio4/live/r4_dsat_g2.ra
mplayer rtsp://rmlivev8.bbc.net.uk/farm/*/ev7/live24/bbc7/live/bbc7_dsat_g2.ra
just dig the final .ra file out of the .ram file written in the source for the realmedia version, and play it! might look a little long winded, but this means you don't ever need to click here, click there, wait for the webpage to load etc.....
http://mplayerhq.hu