To provide technology for always comfortably distributing contents data by avoiding access-congestion (concentration) to the contents data.

When the user of a terminal device 103 connected through a communication network 101 requests access to music data being contents, a web server 111 of a contents distribution system 101 sets an access time for allowing the access and transmits to the terminal device 103 the URL of a music reproduction screen accessible to the music data, an ID needed to access the screen and a notification picture for notifying a password. This avoids access-concentration to the music data excessively. The web server receives a request for returning the purchased music data from the terminal device 103, returns a portion of the purchase price and erases the purchased music data from the terminal device 103.