In some embodiments, user device 602 may be an example of user device 408 of FIG. 4. As an example, user device 408 may be an example of a smart speaker. For exemplary purposes, the user device 604 may be an example of the user device 410 of FIG. 4, that may be an example of a smart phone that is configured with a display and a communications antenna that enables the user device to receive data over-the-air such as from a wireless network and/or a cellular network. Content management engine 606 may be an example of the content management engine 102 operating as part of content management computer(s) 104 of FIG. 1, while service provider computer 608 may be an example of the service provider computer(s) 108 of FIG. 1. The content management engine 606 may be configured to maintain state information (e.g., state information record 200 of FIG. 2, including a historical information record (e.g., historical information record 300 of FIG. 3)) corresponding to any suitable combination of the user devices associated with a given user account (e.g., a user profile). In the example provided in FIG. 6, the user devices 602 and 604 may be associated with the same user account (in addition to the user devices 402, 404, and 406 of FIG. 4).
