1. A computer-implemented method comprising: under the control of one or more computing devices, transferring at least one targeted digital information file to a removable media storage through a media reader/writer interface, wherein the at least one targeted digital information file includes a targeted header, wherein the targeted header includes a descrambling map that is encrypted using information indicative of a player identifier, and wherein the at least one targeted digital information file on the removable media storage is rendered by a mobile device having the player identifier, only if the information indicative of the identifier used to encrypt the descrambling map of the targeted header corresponds to the player identifier of the mobile device so as to allow the mobile device to descramble the at least one targeted digital information file using the descrambling map.