In accordance with one or more aspects, a request to run an application is received. The application has an associated tune manifest that identifies one or more resources that the application may use. The tune manifest is compared to a device resource record, and a check is made, based at least in part on the comparing, whether the one or more resources identified in the tune manifest can be satisfied by the device. If the one or more resources identified in the tune manifest can be satisfied by the device, then the application is run; otherwise, a notification of a conflict between the application and the device is presented. Additionally, when the application exits, a device tune state that identifies a content source to which the device was tuned prior to running the application can be retrieved and the device restored to this device tune state.