BlogTalkRadio is the social radio network that allows users to connect quickly and directly with their audience. Using an ordinary telephone and computer, hosts can create free, live, call-in talk shows with unlimited participants that are automatically archived and made available as podcasts. No software download is required.
Cost: Free
Public Radio Exchange is an online marketplace for distribution, review, and licensing of public radio programming.
Cost: Two hours free, then a fee per piece. Membership fees based on budget size.
CoveritLive.com is a web based Live Blogging tool that allows you to broadcast live commentary to your readers.