Ahh, you are saying the Economists app just uses RSS behind the scenes? Why didn't I think of that!?!
This actually solves real problems for me as I have to often drive through areas where I have no coverage, and I listen to the economist (much to the chagrin of my wife who is riding with me).
Thanks!
edit: Found the info, its actually on the Economists site (looks like you have to login):
You can also listen to it, but that doesnt work offline.