CLUELESS-ORIGINA(LP)Compilation producers: Karyn Rachtman, Tim Devine. The soundtrack of CLUELESS a teens in Beverly Hills comedy that is actress Alicia Silverstone's graduation from Aerosmith video babe to young Hollywood starlet may be full of alterna rock superstars, but is quite relaxed about it. The collection's shoot from the hip attitude allows artists to escape their stage personas, glutton themselves on cover songs or just remix themselves silly. And while the