Patent ID: 7482526

Claim:
A system comprising: an electronic musical apparatus including a memory having a storage area for storing unique identification information in a non-volatile manner, unique identification information being empty in said storage area in an initial condition under which said electronic musical apparatus is used by a user for a first time; and a processing device capable of communicating with said electronic musical apparatus, wherein said processing device is adapted to: access, via a communication network, a predetermined Web site having an identification information issuing function; receiving an ID data file from the predetermined Web site, the ID data file containing unique identification information identifying said electronic music apparatus, interpret the received ID data file, and retrieve the unique identification information from the interpreted ID data files; and deliver the retrieved unique identification information to said electronic musical apparatus, and wherein said electronic musical apparatus stores the unique identification information, delivered by said processing device, in said storage area of said memory; wherein said processing device, upon accessing the Web site, receives Web page information differing in contents depending on whether or not any unique identification information has already been issued to said electronic musical apparatus; and wherein said Web page information includes services for selling music content when a unique identification information has been issued to said electronic musical apparatus and includes free content when a unique identification information has not been issued to said electronic musical apparatus.