There are realplayer links on this
NHK Japanese Radio website So I'm hoping there will be straming audio of the show. (You need to click on the foreign characters at the top underneath the "e-Mail" banner - sorry I wasnt able to link the exact page)
If so, I should be able to record it and burn a disc for any/all on RS.N (unless its all 110 or whatever of our phantom guests)... Lemmeknow...