Check out http://www.geekcorps.org/ http://www.geekcorps.org/ who are working on community radio projects in Mali. I've talked to some Geekcorps volunteers who

Check out http://www.geekcorps.org/ http://www.geekcorps.org/ who are working on community radio projects in Mali. I've talked to some Geekcorps volunteers who were using an open-source project that I maintained, and they seem to be doing good work. They've been operating for several years now.