First off, really slick interface and seemingly very full featured beta!
I am a little confused on the Scrum Sprint Taskboard vs Kanban board. We use a combination of the two with a Kanban board being the Sprint backlog/board. It seems there is no easy way to move cards when viewing the Sprint Taskboard and when enabling the Kanban module in the project, yes the Kanban board is usable for the tasks/stories but the columns in the two are not in sync. Maybe we're doing it wrong, but how should a team move the stories through to done during a sprint?