The use of accessories in enhancing the iPOD music player is discussed. iPOD has a smart, user-friendly design and is customized into a personal library of music with songs classified according to idiosyncratic playlists. The selections or adjusting the volume can be done by simply rubbing the thumb along the scroll wheel. An estimated of 200 iPOD accessories are available in the market ranging from plug-in speakers and remote controls to memory card and USB interfaces.