IF THE AMERICAN FEDERATION OF BLACKSMITHS AND BUGGYWHIP MANUFACTURERS had held a convention in 1910, in those last sullen moments before the Horseless Carriage put them all out of business, then this is what it must have felt like--the same forced cheerfulness laid over the same defeated air, the same stiff upper lip at the prospect of the inescapable end. Outside the Hilton Clearwater Beach Resort, on the Florida coast near Tampa Bay, the beach was streaked with wind and black thunderheads stacked up along the horizon. Inside the hotel, members of the Association of Music Personnel in Public Radio...