A computer system receives, by a first application, a plurality of shared media items. After receiving the plurality of shared media items, the computer system receives, via one or more input devices, a request to search a media library of a second application that is different from the first application for media items in the media library that meet search criteria. In response to receiving the request to search the media library, the computer system concurrently displays, via a display generation component, two or more media items that meet the search criteria. The two or more media items include: one or more media items from the media library of the second application that meet the search criteria, and one or more of the shared media items that are not stored within the media library of the second application and that meet the search criteria.