Abstract: A system and method for high speed and convenient delivery of digital content to a user is described. The system and method include systems for providing digital content to a user, monitoring and controlling an interface between the user and the system to provide for purchase or lease of digital content by the user. The system also includes a novel portable digital content storage device for receiving downloaded digital content for later use by the user on the user's playback equipment. The system and method also provide for control of the digital content in accordance with digital rights management and other content usage conditions. Also provided is an adaptor connectable to the portable storage device to convert signals representative of the digital content stored in the portable storage device to a form usable by a user's playback or storage equipment.