iPlayer Radio Problem

When I try to connect to Radio 4 (which is my lifeline to sanity) I’ve suddenly started getting this message in a pop up:

Is this a glitch with the site or with my setup?

I have recently had problems with my wireless connection, which is beamed across to me from another house, but now my connection seems fine.

I also live outside the UK, but this has not been a problem before and the BBC says I should be able to listen to the radio.

I have a Mac with OSX.

Thanks!

The iPlayer forums have suddenly burst into life - it appears to be a worldwide problem.