SlotMusic cards containing music available for the slotMusic player at the SanDisk booth at the annual Consumer Electronics Show (CES) in Las Vegas, Nevada January 7, 2009. SanDisk Corp unveiled the portable digital music system based on memory cards preloaded with songs, signaling a shift in its strategy to compete against the iPod. The music comes pre-loaded on 1 GB micro SD cards that can be played on any device that accepts the cards like many mobile phones. REUTERS/Rick Wilking (UNITED STATES)