A system for playing a selected one of multiple audio tracks recorded in synchronized fashion with a motion picture on an optical disk. The optical disk has encoded on it a mixing master music and effects ("M&E") track, or a switching master M&E track. Individual audio tracks are provided for language-specific...http://www.google.de/patents/US6418271?utm_source=gb-gplus-sharePatent US6418271 - Data structure for representing video program subtitles
