Hey sweetie...its just an eraser:))))))))))) it does not hold song its not a real mp3 player......but that be soo cool if they started too make tape/cd erasers..:_))))) or head phone erasers:))))))))i think theses erasers r soo kewl maybe it will make writing /learning more fun 4 kids.:))))))) thank you sweetie:)))))) have a gr8 night:))))))