Location-relevant real-time multimedia delivery and control and editing systems and methods

A system for providing a tour of a venue includes a central computer for creating the tour, at least one venue server computer, communicatively connected to the central computer remotely at the venue, for storing the tour, and at least one portable device, communicatively connected to the venue server computer at the venue, for obtaining the tour from the venue server computer. The at least one portable device includes a GPS receiver or other geographic location identifier. Particular "point of interest"-specific content of the tour is output by the portable device whenever the device is located at the geographical location of the coordinates for the point of interest. The specific content of the tour so output by the portable device includes multimedia, including, for example, text, graphics, audio, video, and others. The portable device is carried by a tourist or other user and provides interactive multimedia to guide during the tour. Tours are created and edited at the central computer, and then communicated to the venue server computer. The venue server computer is located at or near the venue of the tour, and thereat writes the relevant tour or tours to the portable device. The venue server computer includes security, control and payment systems for access to use the portable device. The portable device logs usage information for the device, and this information is communicated back to the venue server computer and on to the central computer.