How does August begin in New Orleans? With trumpeters sweating while they invoke the spirit of Louis Armstrong in the French Quarter, and with connoisseurs and dilettantes alike sweating through their white linen while cruising galleries in the arts district. Hot enough for you? Of course, that's not all there is to New Orleans in early August. We don't propose to cover everything in town in the next half-hour, but we do what we can. No sweat; it's All Things New Orleans.