Radio 4 Extra, 01:30 tonight
http://www.bbc.co.uk/programmes/b007jr11
It was on earlier as well, a half-hour play in binaural stereo.
I couldn't hear the 3D effect myself. I'll record it and try different
headphones.
And I don't know how well the effect is preserved through the format changes
if you download it from the BBC iPlayer.
--
Eiron.