Distribution of audio and other multimedia content is accomplished by generating a multimedia session consisting of at least one multimedia program, generating a data session consisting of digital files including at least one software player program and a digital compressed file corresponding to the multimedia program; and distributing the multimedia and data sessions to consumers. The light source and the illuminant are disposed in approximately symmetrical positions sandwiching a vertical surface orthogonal to a moving direction of the light source, that is, a direction of Y and including an original reading position. The entitlement may indicate a computing resource of the computer system that is accessible to the user. The preferred method of recovery is for the UAV to fly into and latch onto the parasail tow line or cables hanging off the tow line and then be winched back down to the boat. A method of this type is particularly suitable for the demultiplexing of an input data signal, and can also be designed to be multi-step.