1. A method for automatically generating playlists of audio files, the method comprising: collecting a plurality of audio file playlists into a playlist database, wherein each audio file playlist indicates an ordered sequence of audio files; generating an N-gram statistical model of the audio file playlists in the playlist database, wherein the N-gram statistical model models ordering sequences of the audio files indicated in the playlists; receiving a request to generate a new playlist; and in response to receiving the request: determining an initial ordered sequence of one or more audio files; and generating a new playlist comprising an ordered sequence including an indication of one or more of the audio files from the playlist database, wherein said generating a new playlist comprises applying the initial ordered sequence to the N-gram statistical model.