All of today's programmes on Radios 3 and 4 (I have not checked the other channels but the same probably obtains) are shown as "This episode will be available soon". Don't believe it. They have simply not had their information updated. Those whose broadcast ended more than about 15 minutes ago are, in fact, available via get_iplayer, though not, it seems, to be listened to directly via the iPlayer. 
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