hey I'm surprised KATG give away so much for free. If I was them I'd bundle the first 800 podcasts into groups of 100 and charge $5 for each pack.
These days a lot of musicians/ comedians don't make money from album sales so why not make it cheap. You get the product in peoples hands so they'll pay to see you live.
For example - I'm 36 now and growing up in Australia, cd's used to cost $30 and tickets to see a big international band would be $50. Now cd's are about $18 but you'll pay at least $100 to see a band live and once they've got you in the door they'll sell you merch as well. Ask Krusty, the T-shirts are the sweetest slice of the pie