Frank Consola is the hardest-working man in Miami radio. At least nonprofit radio. He's on the air twenty hours a week at community-supported WDNA-FM, Miami's "jazz and rhythm station." Monday through Friday Consola is at the console hosting 88 Jazz Place from 7:00 to 11:00 a.m. He does this as a volunteer -- without pay. How's that for dedication? The Brooklyn-born Consola has been pitching in at the station since the late Eighties. How's that for commitment? The show itself is an eclectic mix of jazz styles, varying from day to day. One highlight is the "Top Ten at 10," a Wednesday feature at 10:00 a.m. in which he counts down the week's top-selling jazz albums.