I think what ruytlm meant was why is NPR One not delivered as just an internet radio stream that any Shoutcast client can connect to. There's a good reason of course: Shoutcast's protocol doesn't allow for an kind of user input, which prevents NPR One from implementing any kind of voting system so that it can curate its selection. Such functionality would be useful for traditional internet radio stations. Many stations take feedback about the current song on their main site, take requests, etc. and it would be great if the Shoutcast protocol allowed stations to display some kind of form to provide interactivity.
Not only that, NPR's shows are available in other ways on standard protocols. I listen to a couple of shows regularly through my phone's built in podcast client.
They're adding a new way to access their media because it does things that the generic clients can't. That doesn't mean the other distribution channels are going away.
