It's kind of hard to really rage against the machine when your band is like a supercharged battery cell that helps the machine operate more efficiently. Such is the dilemma that has plagued Rage Against the Machine since their career hit terminal velocity. But instead of coming up with reasons to justify their existence, Rage just continue to rage. Lyrically, they'll probably open some more young minds with their antigovernment, proletariat agenda, but it's their music that speaks most loudly. On its third album, THE BATTLE OF LOS ANGELES, the band expands upon its combustive rap-metal foundation, flavoring "Guerrilla Radio" with a guitar-generated "harmonica" solo, upping the burning funk quotient on "Calm Like a Bomb," and embellishing "Mic Check" with skittering beats, echoing feedback, and a staccato chorus that sounds not unlike electronica kingpins Prodigy. Throughout the disc, guitarist Tom Morello coaxes more otherworldly noises from his instrument than a DJ with a stack of sound-effect records, as vocalist Zack de la Rocha rails against the evildoers and capitalists who oppress the masses -- and, well, pay the band members' salaries.