One secret ingredient in the elephantine new Sunn O))) record, Monoliths & Dimensions, is Julian Priester. The murky, dirgey album's coda comes from the trombonist, who adds free jazz to "Alice" after a record's worth of metal, drone, and other bone-compressing free for alls. (He also plays a conch shell on opener "Aghartha.")Priester's been involved in the jazz scene since the '50s. He's played with Sun Ra, Max Roach, John Coltrane, Herbie Hancock, and Freddie Hubbard, among others, veeri