Abstract: A method of selecting content items based on user interactions with provided content is performed at a server system. A subset of content items selected from a plurality of available content items is provided to a first user of the service. An amount of time that the subset of content items is provided to the first user is determined. Content item selection criteria for a second user of the service is adjusted based on the amount of time that the subset of content items is provided to the first user. In response to receiving -a request for a content item from the second user, a content item is selected items for the second user from the plurality of available content according to the adjusted content item selection criteria. The selected content item is provided to the second user.

Abstract: Methods and systems for providing access to content are disclosed. The method is performed at least in part at a client computer system having a processor and memory. The method includes executing a host application associated with a first party. In some implementations, the host application is a media player. The method further includes initiating a secure communication channel between the host application and a server associated with the first party. The method further includes executing a supplemental application associated with a second party. The method further includes accessing, with the supplemental application, content licensed to the first party, wherein the licensed content is accessible to the supplemental application via the secure communication channel subject to terms of a licensing agreement. In some implementations, the content is media content, such as music, movies, and the like.