Some blame ''The Whipped Cream Mixes'' -- ECC's 1993 7'' that fused Public Enemy with Herb Alpert & the Tijuana Brass -- for spawning the computer-collage ''mash-up'' movement. But Committee spokesman Mark Gunderson, a record geek from Columbus, Ohio, is less interested in Frankenstein popcraft than in culture-jamming slapstick. Exhibit A: his follow-up single ''Rocked by Rape,'' which arranged countless Dan Rather sound bites into an apocalyptic rap riding a sample from AC/DC's ''Back in Black.'' It's the money shot on this long-brewing second album, which turns garage-sale detritus, voice-mail jabber, and pop shrapnel into a musical comedy record where the absurd and the sophomoric duke it out. EMBED MATES We hope ECC are working on a postwar ''Rocked by Rape'' sequel, featuring CNN's Aaron Brown.