http://iplayerhelp.external.bbc.co.u...al_wma_streams

both the WMA and Real streams work for me here in the UK, and in theory they should work overseas too, maybe someone can test.

the guide to what's on is here: http://www.bbc.co.uk/radio/

--edit--

I just came across this site where someone's put together a really lightweight site with RealMedia links: http://bbcradio.mobi/

Unfortunately no matter what user-agent I tried I couldn't get their "official" mobile live radio & tv streams to work (http://www.bbc.co.uk/mobile/live/radio/ and http://www.bbc.co.uk/mobile/live/tv/) - funnily, despite saying so in the help, it didn't work with our test N97 at work, also saying "Your device doesnt' support this service".