1. A method practiced with a consumer electronic device, comprising: receiving content data representing audio, image and/or video content, the content data being received in a file format of a type that the electronic device is capable of rendering to produce a content-related experience, by reason of a first software rendering program earlier installed or otherwise made available for use with the device; by reference to the received content data, identifying a software rendering program desired by a proprietor of the content data for producing a content-related user experience with said content data; determining that said proprietor-desired software rendering program is not presently installed or available for use with the device; and based on said determining, refusing to render the received content data on the device, despite the capable first software rendering program; wherein the consumer electronic device respects a desire of the proprietor regarding the software rendering program by which a content-related user experience is to be delivered to the user.