1. A method for creating a new digital work from one or more existing digital works having parts, said method comprising: indicating a first part of a digital work, the first part having first usage rights associated therewith, the first usage rights specifying a particular manner of use for the first part; indicating a second part of a digital work, the second part having second usage rights associated therewith, the second usage rights specifying a particular manner of use for the second part; creating a new digital work by combining the first part and the second part as new content and associating new usage rights with the new content, wherein the new usage rights specify a particular manner of use for the new digital work.