A method of playing a rich content stream that includes a media stream and a descriptive stream. The method may include the steps of receiving the rich content stream at a media player, where the descriptive stream is generated from a rich content file executed separately from a source for the media stream, and where the media stream and the descriptive stream are received as separate streams at the media player. The method may also include synchronizing the media stream and the descriptive stream at the media player so that information in the descriptive stream is temporally synchronized with media content playing from the media stream. In addition the method may include activating the playing of the descriptive stream while the media stream is playing on the media player, where descriptive content from the descriptive stream is not played on the media player until being activated by a user.