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 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 downloaded over the network; a combining instruction issuing unit which issues a combining instruction to combine the multimedia data with each other; a combining unit which, when the combining instruction issued by the combing instruction issuing unit is detected, reads out multimedia data to be combined from the memory, and combines the read out data; a storage control unit which, when the multimedia data combined by the combining unit includes downloaded data, stores storage addresses of respective multimedia data stored in the memory so as to be associated with each other, and, when the multimedia data combined by the combining unit does not include downloaded data, stores the combined multimedia data in the memory; a transmission instruction issuing unit which issues a transmission instruction to transmit the combined multimedia data to an outside of the portable communication terminal; a determination unit which, when the multimedia data is read out by the transmission instruction issuing unit, determines whether or not the storage addresses of multimedia data are stored in the memory; and a disabling unit which, when the determining unit determines that the storage addresses of multimedia data are stored in the memory, disables transmission of the combined multimedia data.