at least one mail slot through which a media cartridge is inserted and ejected;

at least one media drive into which the media cartridge is loaded;

at least one media cartridge storage section that stores the media cartridge; and

a media cartridge picker including

a turntable that supports the media cartridge and rotates to change the orientation of the media cartridge;

a turntable rotating mechanism that rotates the turntable; and

a media cartridge transporter that transports the media cartridge between the turntable and one of the mail slot, the media drive and the cartridge storage section;

wherein the turntable is provided with a media cartridge stopper member capable of stopping the media cartridge inserted manually from the mail slot, the media cartridge stopper member including

a main body section having a rectangular shape and including

a first side surface to stop a further insertion of the media cartridge when the media cartridge is manually inserted and brought into contact with the first side surface; and

a second side surface adjacent to the first side surface to permit the further insertion of the media cartridge; and

a shaft including

a first shaft portion formed along a third side surface of the main body section that opposes the first side surface and is adjacent to the second side surface; and

second and third shaft portions projecting from the opposing ends of the first shaft portion; and

the media cartridge stopper member is attached by engaging the second and third shaft portions into the turntable.