A protective case or mounting device for a portable digital media device includes a first and a second snap fit cavity adapted to receive and selectively retain a first and a second protrusion element, respectively, associated with any of various accessory mounting or position retention elements. Connection between respective protrusions and snap fit cavities is made by depressible insertion. A portable digital media device may thus be removably engaged to various positioning elements without requiring the device to be removed from a protective case.