Harmonix, MTV Games and Electronic Arts today announced that Rock Band fans and gamers have propelled its downloadable content to 'Double Platinum' status, purchasing more than 2.5 million game levels based on songs since its launch on November 20, 2007. A Metallica pack featuring three of the mega-platinum band’s most electrifying tracks (Ride The Lightning, Blackened and And Justice For All) is currently the game's top-selling music download, followed by three-song packs from The Police, Queens of the Stone Age, David Bowie and a collection of Black Sabbath covers. Check full article for details.