Never before has this cloistered world opened its doors to a completely candid, no-holds-barred look at itself. Eisenstock takes us to breakfast with Eddie Andelman, Boston's godfather of sports radio, and hangs out in the parking garage with nationally syndicated J.T. the Brick. We join him in the WFAN commissary with Mike and the Mad Dog in New York, and enter the plush broadcasting digs of Chicago's hot dog-vendor-turned-#1 DJ, Mike North. Program directors with reputations at stake, station managers obsessed with the bottom line, and rabid fans who won't back down are all players in a rarely glimpsed contest to which we get front-row seats. Unflinching and often hilarious, Sports Talk gets the inside pitch on t