By Solange Reyner
Come out, all ye shower singers. Karaoke is hip again! And now, served fresh with a big fat burger on the side. 8 oz. Burger Bar in South Beach lets you take the mic every Monday at 9:30 p.m. Don't worry, my notoriously horrible singing won't be on any stage anytime soon.But - if you sound good - you'll pick up some snazzy prizes.