hile it won’t put any new songs in your Rock Band 2 playlist quite yet, Harmonix and MTV Games have inched one step closer to getting you those additional 20 extra (and free) tracks. If you register your game at http://register.rockband.com/, you’ll get an e-mail “as soon as the tracks become available,” including a voucher code for the DLC goodness. There’s still no word on what exactly those extra songs are, though. All we know is that they’re free, there’s 20 of ‘em and that registering the game is a great way to kill valuable seconds during those slow times at work.