Hugh Blumenthal is the folk music specialist for About.com. Among the offerings at his site is a comprehensive list of Folk Radio and Webcastings. Visit it and decide for yourself what you can work into your schedule. In addition it is a fine site for all those with an interest in the folk genre. I don't setup URL's as part of my post because I've never tried it but just search for About.com +Entertainment +Folk. It should get you there. Cheers!