An information processing system uses data processing for content. The system includes a preference-data manager for managing user's preferences concerning types of the data processing which are used for said content, a content generator for generating content by using a user-preferred type of the data processing for said content, a content storage unit for storing said content as original content and the content generated by said content generating means, and a resource manager which manages system resources and which, in response to availability of the resources, requests said content generating means to process said content.