The digital content store provides users with an opportunity to purchase authorized usage of digital content, such as single or multiple music tracks, video, movies, and/or video games. The users can also buy license to a desired track for a fixed number of times, e.g. preferably the users can listen...http://www.google.de/patents/US20040205028?utm_source=gb-gplus-sharePatent US20040205028 - Digital content store system
