A system for outputting a media stream and supplemental media streams is provided. A media stream manager outputs the media stream and associated supplemental media streams on a media stream output device. A timing module generates triggering events in conjunction with the output of the media streams according to event data. The media stream manager monitors for and detects the triggering events during the output of the media streams. Upon detecting a triggering event, the media stream manager determines which supplemental media streams are associated with the triggering event and iteratively outputs each associated supplemental media stream to the media stream output device. Supplemental media streams are output either synchronously or asynchronously according to previously determined information. A supplemental media stream that is output asynchronously to the media stream suspends the media stream and the timing of the media stream while the supplemental media stream is output.