To provide a browser apparatus with the contents of data provided on a network in a form of voice data, voice data indicating a part or the whole of the contents of the data provided on the network is formed and stored on a gateway, on the basis of the data. Data is formed by adding to the data provided on the network an identifier indicating a location where the voice data is stored. This data is provided to the browser apparatus. The browser apparatus receives the voice data from the location indicated by the identifier.