A rendering method, system, repository and software for controlling use of digital works in accordance with usage rights associated therewith and including a manner of use therefor, including receiving requests for digital works; determining whether a request for a digital work should be granted based on usage rights associated with the digital work; and storing digital works in a removable storage device. Whether a manner of use specified in the request corresponds to a manner of use included in the usage rights is determined and if so the request is granted. A contents file of the digital work and a description file including the usage rights and associated with the contents file are stored on the removable storage device. A secure and trusted communication is established between the repository and the removable storage device.