“Down Memory Lane” There are still actors and singers and jugglers, but "showbiz" is no more. Showbiz was an insular world of bright lights, late nights, meals cooked on hotplates, secrets, rivalries, dazzling curtain calls. One of the few surviving members of this hermetic cult is Flo Hayle, who will perform her cabaret show "Down Memory Lane" at the Bridge Street Theatre in Catskill. This is her farewell performance; Hayle is 94.