By day, Valley jazz fans must rely on their iPods, or make do with the inferior smooth jazz served up on KYOT, until KJZZ switches over from its National Public Radio talk feed at 7 p.m. From then until 3 a.m., though, it's all smooth sailing, with the station's "acoustic jazz" format giving blessed airplay to Miles, Byrd, Coltrane, Dizzy and even a few lesser icons who must go by two names (Tommy Newsom, anyone?). On Sunday nights, the blues takes hold, with Bob Corritore's venerable "Those Lowdown Blues" bookended by Drew Verbis' "Blues and Beyond," dedicated to newer blues-influenced artists, and the Chicago-based program "Portraits in Blue" winding down the night. Cool.