A remote media player and methods for managing content. The stator includes a plurality of stator windings, and a motor controller is coupled to the motor to energize the windings so as cause the rotor to turn. Some embodiment are implemented as part of, for example, a anti-aircraft defense system, wherein incoming aircraft need to be disabled, and the present invention provides a way of distracting, exhausting, confusing, overwhelming, or bypassing the hostile aircraft’s anti-missile defenses so that, e. The waveguide includes a proximal end coincident near the proximal end of the sensor body and a distal end coincident at a point near the distal end of the sensor body. The inclusion of ultrasound in the apparatus improves the distribution volume of material four to six times over a convection-enhanced delivery system without ultrasound. The ability of the 2-carbon-modified vitamin D analogs to stimulate new bone formation suggest that these compounds can be used where synthesis of new bone is required.