Today at CTIA, Slacker announced that come October they will have a full fledged app ready to roll on BlackBerry devices. I previewed this yesterday on a Bold that happened to be T-Mobile branded, but it’s probably a European model. Anyway, the app was integrated into the BB very well and left rather impressed. The app and service are free, but you do have the option of the pay service should you choose to go that route. Our boys on the floor at CTIA will have a video demo shortly.