I host a weekly radio program on blogtalkradio.com. From there, I found a service called CINCH: http://www.cinchcast.com/
You can actually call-in from your phone, skype, or audio on your computer and record things. I happen to love blogtalkradio, though, because you can broadcast live OR broadcast on your own schedule and then the show is archived with a URL link. And best thing? It's free. Go to http://www.blogtalkradio.com. Hope this helps!