1. A non-transitory computer readable medium storing a media-editing application which when executed by at least one processing unit exports metadata associated with a composite presentation, the media-editing application comprising sets of instructions for: exporting, from the media-editing application, a composite presentation that was created by the media-editing application, said composite presentation having an associated set of metadata and a set of export rules, wherein the set of metadata has data that describes the composite presentation; identifying, based on the set of export rules for the set of metadata, a subset of the associated set of metadata to export with the composite presentation; and exporting, from the media-editing application, the identified subset of the metadata set.