1. A portable wireless communication terminal having an acquiring device which acquires multimedia data, a wireless communication function, and a downloading function for downloading multimedia data including copyright information over a network by using the wireless communication function, the portable wireless communication terminal comprising: a memory which stores the multimedia data acquired by using the acquiring device and the multimedia data including the copyright information which is downloaded over the network; a combining instruction issuing unit which issues a combining instruction to combine multimedia data with each other; an outputting unit which, when the combining instruction issued by the combining instruction issuing unit is detected, reads out items of multimedia data to be combined from the memory, combines the read out data, and outputs combined multimedia data; a first determination unit which determines whether or not the combined multimedia data output from the outputting unit includes the downloaded multimedia data including the copyright information; a first storage control unit which, when the first determination unit determined that the combined multimedia data includes the downloaded multimedia data including the copyright information, does not store the combined multimedia data, and stores respective storage addresses of the items of multimedia data in the memory so as to be associated with each other; a second storage control unit which, when the first determination unit determines that the combined multimedia data does not include the downloaded multimedia data including the copyright information, stores the combined multimedia data in the memory; a transmission instruction issuing unit which issues a transmission instruction to transmit the combined multimedia data which is output from the outputting unit from the portable communication terminal; a second determination unit which, when the transmission instruction issuing unit issues the transmission instruction, determines whether the combined multimedia data is: (i) based on the respective storage addresses stored by the first storage control unit, or (ii) stored by the second storage control unit; and a disabling unit which, when the second determining unit determines that the combined multimedia data is based on the respective storage addresses stored by the first storage control unit, disables transmission of the combined multimedia data.