A digital audio player and a data structure and method for providing an audio playlist. The data structure includes a playlist record for each audio data file, each playlist record including a file pointer segment and an information segment having a plurality of content information fields and at least...http://www.google.com/patents/US20040236568?utm_source=gb-gplus-sharePatent US20040236568 - Extension of m3u file format to support user interface and navigation tasks in a digital audio player
