Example episode payload
{ description : "Isaac Z. Schlueter, James Halliday, Felix Geisendörfer, and Maciej Małecki on New ECMAScript Features, What's Next Up for Node, Stability, Domains, HTTP Parsers, Difflet, Tests, Give, Listener Questions and More!",
duration : 5338,
enclosure : {
filesize : 0,
type : "audio/mpeg",
url : "http://feedproxy.google.com/~r/NodeUp/~5/J8aawbHCeDk/NodeUpThirteen.mp3",
__proto__ : 'Object'
},