The court case pitting industrial-art rockers Tool against their label, Volcano Records, has been postponed for a fifth time. The band's suit, originally filed in September 1997, was intended to free it from a contract with Volcano. The suit cited the label's failure to exercise in a timely fashion its option for a follow-up recording to 1996's platinum-selling AEnima. The case, which was supposed to have begun Tuesday, now has been pushed back to Nov. 24. The band's manager, Ted Gardner, said the most recent delay was caused by his trip overseas as well as the continuing negotiations between the band and the label.