fuffybaby18 just sent me this link in an IM and I'm excited so I'm passing it on (and yes, US [and I assume Canadian] residents can listen to it, there shouldn't be any restrictions):
Sadly,
fuffybaby18 learned about this after all the pre-Christian episodes were over *sad face* but you can listen from the Vikings on up. The episode "A Land of Many Kings/Poets, Judges, Nobles, the Free and the Un-free" is only available for the next 16 hours, so hurry and listen!