A system comprises a first integrated circuit chip that includes a first electronic component; a second IC chip that includes a second electronic component; a through silicon via in the second IC chip that electrically couples the first electronic component to the second electronic component; and a signal gating transistor that fully occludes the TSV. The system further includes an adjustable stand on which the vessel is mounted and a device for deflecting air along a path into which the vessel can be positioned. The online music distribution system also provides for previewing of audio data prior to purchase. Magnetic interface configured to receiveprocess a data transmission start signal, such that magnetic interface or control unit generates a wireless interface activation.