MARTIAN RADIO: A mailing list brought this to my attention:

As a service to the Mars Society, its members, and the world, some Toronto chapter members will be starting a streaming audio station over the web to provide you with news, music, entertainment, interviews, talks, and webcasts of audio reports and debriefings from FMARS, MDRS, and Euro-MARS as they are released to the public.

More on this as it becomes available. The launch date is expected to be July 4th.

UPDATE: You can send content and find out more about the station by contacting Brian Orlotti