Mos Def, who is still insisting that we all call him Yasiin Bey now, is launching a new project called Top 40 Underdog, in which he'll remake and tweak some big radio hits. In the first entry, he takes on "Niggas In Paris," the great and world-conquering smash from his more-famous buddies Kanye West and Jay-Z. Yasiin's version is a ...