Turning to the contents of the memory 730, the memory 730 may include an operating system 740, one or more data stores 742, and/or one or more application programs, modules, or services such as a content management engine 744. The content management engine 744 may be configured to manage state information regarding playback of various content at the device(s) 706. In some embodiments, the content management engine 744 may be configured to identify/determine particular content and/or one or more devices to which that content is to be streamed. These determinations may be performed by the content management engine 744 based at least in part on the state information maintained by the content management engine 744. In some embodiments, the content management engine 744 may be configured to manage a user profile (e.g., for one or more users) and/or the state information related to a user profile (e.g., when the user profile is managed by another system not depicted in FIG. 7). If the user profile(s) are managed by another system not depicted in FIG. 7, the content management engine 702 may be configured to transmit and/or receive data to/from this system (or systems) via network(s) 710 in order to exchange any suitable information (e.g., any suitable data maintained by that system such as user profile data, state information regarding playback of content at one or more user devices associated with a given user profile, subscription information, device attributes, filtering data, group data, etc.). In some embodiments, the content management engine 702 may be configured to receive and/or request data from the user device(s) 706 and/or the service provider computer(s) via network(s) 710.