--The heart of rock and roll is still beatin' -- at Stern Grove this afternoon. It's HUEY LEWIS AND THE NEWS!!!! The free show starts at 2, but we assume folks'll be lining up pretty early, beach towels and folding chairs at the ready. Stern Grove's at Sloat and 19th. --The Chinese Cultural Center screens White Tower, a documentary about deaf culture in China's Henan Province. 1 p.m., $6, 750 Kearny 3rd Floor (x......