Going at fever pitch through the winter holiday rush? Cool down just a bit with the jazz guitar stylings of the Brian Betz Duo at the Long Beach Island branch of the Ocean County Library in Surf City on Saturday, Dec. 16 at 2 p.m. Betz and fellow guitarist George Vanderbilt will present a program of traditional jazz, bop and blues. Betz, of the Philadelphia metropolitan area, and Toms River-based