Abstract: A system is disclosed for retail display of a cassette in a box and for storage of a cassette at home or in an automobile using a flat plastic holder having a window and four protrusions into the window. These protrusions fit into holes in the box. A pair of protrusions on one side, which are longer than on the other side, are inserted into matching holes in the box. As the other side is then moved into the window, the other (shorter) pair of protrusions snap into the remaining holes in the box. The holder has an extension at one end with a hole for receiving a rod of a display rack. For storage, the holder slides into slots on the inside of a case. The extension then seves as a tab for lifting the holder out of the case.