The AZIO MP306 Digital Audio Player is a USB storage device and MP3 player in one small, convenient package. It also serves as a voice recorder with a built-in microphone, though the joystick/jogger is not a convenient way to control the recording functions. Voice-activated recording would be a welcome addition. The device's 128MB memory is not expandable or removable. The sound quality, however, is very good, and an equalizer lets you adjust the tone with a handful of presets.