I was never much one for “Guitar Hero.” Playing “Smoke on the Water” 50 times while holding a pint-sized plastic guitar just never really got the blood flowing. I’ve been waiting for something better, and now it’s here. Activision’s new “DJ Hero” has solved my music video game plight. It’s got better music, better action and is frankly just a lot less goofy feeling than “Guitar Hero.” “DJ Hero” consists of the game disc and a wireless turntable and mixer controller. The mixer can be attached to either side of the turntable, so lefties and righties can scratch and fade as they choose.