The percussive trio hit gold with 1999's instrumental Audio and apparently thought adding vocals was the logical next step. They were wrong. Even emotive guests like Tracy Bonham and Dave Matthews can't heat up The Complex's frosty, dullingly drum-driven aesthetic. Dubious achievement: the cheerleaderish ''Time to Start,'' whose crisp beats and cleanly voiced exhortation (''It's time to start/Ready/Go!'') are perfect for sidelines shout-alongs. Absolute winner: Esthero's saucy cover of ''White Rabbit.''