Wednesday's MEDICINE BALL CARAVAN (11am-noon Central Standard on 88.7FM locally or www.krvs.org) burns hot with the soulful and funky sounds of David Egan, The Subdudes, Honey Island Swamp Band, Dumpstaphunk and Geriant Watkins. Also: vintage classics by Big Bill Broonzy, Joe Turner & Pete Johnson, Andre Williams, Lightning Hopkins, Ernie K. Doe, Little Booker and Sly & the Family Stone (live at Woodstock)