ACCESSING MEDIA

In general, one aspect of the subject matter described in this specification can be embodied in a method for receiving a request, from an application in an application execution environment, to play a media asset that has associated media information. The application has associated application information and is restricted to an isolation environment provided by the application execution environment. In response to the request, content of the media asset is provided to a component of a computer system for playing. Access by the application to the content of the media asset during the playing is restricted based on the media information and the application information.