9 Computer hardware and software for registering sales of digital content, namely, movies, songs, digital books, games or software applications; computer hardware and software for tracking sales of digital content, namely, movies, songs, digital books, games or software applications; computer hardware and software for clearing sales of digital content, namely, movies, songs, digital books, games or software applications; computer hardware and software for allocating revenue from sales of digital content among interested parties, the digital content consisting of movies, songs, digital books, games or software applications; computer hardware and software for enabling a consumer to re-sell digital content that he previously purchased, the digital content consisting of movies, songs, digital books, games or software applications