An engineer in Japan running the Electronics Live Mfg (ELM) website has built an MP3 player shaped like Apple's Power Mac G4 Cube. The MP3 Cube comes with no buttons or dials to control the device and instead requires physical movement. By using the built-in acceleration sensor instead of mechanical switches, the device is able to detect motion which allows users to tap, tilt and move the player, in order to designate commands such as the volume, which song is being played, and if the device is on or off.

Controls for the MP3 Cube consist of tapping the right corner against a table or hard surface to move forward through the songs, tapping the left corner to go back, placing the speaker face down to turn the device off, and putting it back to how it was to continue playing. For volume changing, tilting or leaning the device to the left or right changes volume. Music is loaded through a top-mounted SD card slot.

MP3 Cube is capable of being used as a stand-alone or paired with a second speaker. The device is initially turned on when it connects with the SD Memory Card, and turns off when the SD card is removed. [via Gizmodo>]