There is not much information on the site, but Dialup Radio claims to have been specifically designed for use by human rights activists in the deveoping world, with particular attention to security and keeping costs down. From the brief description, I think it could also be used as an alternative distribution method for radio news where stations don’t have access to the internet, but do have a telephone. They would simply call the (open source Asterisk) tepehony server and “order” news from a menu of options.
“Dialup Radio is a tool that distributes human rights and independent media via telephone. Brief radio-style audio files are uploaded and managed via the Dialup Radio website. These files are immediately available to callers who phone the project phone number. Our software automatically generates interactive voice response (IVR) menus that enable callers to naviage audio content using their telephone keypads. Dialup radio works with any telephone, and can be adopted for a variety of activist campaigns.”