GizMac has introduced two new cases for the iPod nano (with video). The Aluminate is a hybrid case for iPod nano made from a combination of aluminum and polycarbonate. The front of the case is thin, colored aluminum, while the back is clear polycarbonate. Features include built-in screen and Click Wheel protection, and an included lanyard and carabiner clip. The DuraSport is a silicone case for the iPod nano featuring Click Wheel protection, a clear…