By Denny Dyroff, Entertainment Editor, The Times Jason Ricci and JJ Appleton What do you get when you pair a talented singer/songwriter/guitarist from New York City and a kickass harmonica player and singer from the South? You get an act billed as Jason Ricci and JJ Appleton. The two veteran musicians will bring their no-holds-barred sound to the Sellersville Theater (24 West Temple Avenue, Sellersville,...