The Associated Press, which is a co-operative owned by most daily newspapers in the US, will offer multimedia news packages on line, and an electronic archive of its stories, to its members next year. The new service will repackage the same text, photographs, audio and video that it currently distributes to more than 1,500 print and broadcast subscribers, for use on the World Wide Web. The Web pages and archive are intended to assume some of the effort newspapers have to put in to create their Web pages, and the material will be accessible only at subscribing papers’ sites.