Chris from the increasingly fine Pixelsumo blog writes: Bitbox "is a performance interface by Brian Crabtree. Before I mention anymore, check out this 7mb video (quicktime mp4) which will explain everything. Each row of buttons is a sample. You press a button on that row to start playing the sample and an LED moves along each column providing visual feedback as to the loop position of the sample. Samples can be started anywhere along the timeline by pressing buttons further along."