Example techniques for populating a preference database affiliated with a media playback system with preferences received for media items are provided. A preference may be associated with a media item from a service provider account, and may be stored in the preference database in association with the service provider account. The service provider account may be associated with multiple user profiles used to access a media playback device, and the preference may be associated with one of the user profiles associated with the service provider account, and stored in association with the user profile. Further, the preference may be received from a user account different from a user account used to access the media item. In this case, the preference may be stored in association with the user account providing the preference. The stored preferences may be used to manage media content playback by the media playback system.