Music industry primps for a hip-hop and rhythm-and-blues Grammys - AFP to My Yahoo! LOS ANGELES (AFP) - Young urban music stars, led by eclectic rap duo Outkast, are poised to steal the show at Sunday's 46th annual Grammy Awards, but they'll still have to compete for attention with the superstar who won't be there, Janet Jackson. While Outkast, siren Beyonce Knowles, her rapper boyfriend Jay-Z and producer Pharrell Williams all lead the nominations with six each, Jackson's absence will be felt as strongly as the winners. Michael Jackson's little sister, who was to present an award to Luther Vandross,...