American Routes, the New Orleans-based public radio music series hosted and produced by Nick Spitzer, is moving from American Public Media to Public Radio Exchange distribution as of July 1. Spitzer has retained pubradio veteran Ken Mills to manage the transition and “help plan a new independent future for American Routes,” he said in a statement. Spitzer and Judy McAlpine, APM senior v.p. of national content, described the split as amicable. PRX picked up distribution of Sound Opinions, the weekly rock music show from WBEZ in Chicago, last July.