Another American Idol alum has conquered the album charts. This time it's second-season champ Ruben Studdard, whose debut CD, Soulful, bowed at No. 1 with sales of 416,500 copies. Despite the strong start, Studdard failed to best the first-week sales of runner-up Clay Aiken's debut Measure of a Man — which moved 613,000 copies. The Velvet Teddy Bear did, however, top Idol's inaugural winner Kelly Clarkson, whose CD Thankful sold 297,000 copies last May. What does all this mean? Clay is #1, Ruben is #2, Kelly is #3 and Justin is wondering where it all went so wrong.