By Lyndsey Parker Durbin & band "American Idol" headbanger James Durbin, who recently released his debut album, Memories Of A Beautiful Disaster , on Wind-Up Records, is known for rocking out with Judas Priest and Zakk Wylde or playing with fire (literally) onstage. But the scarf-tailed rocker does have a softer side, as evidenced by his recent unplugged performance for the Yahoo! Music  staff. Durbin & band Of course, the Durbinator still rocked--just in a kinder and gentler way. And he was