Audio and video streams of the competition, which runs May 20-June 5 in Fort Worth, Texas, will be available at www.cliburn.org, as will information about performers and repertoire. Free registration is required.
Web listeners will be able to cast a vote for a separate new prize to be awarded to one of the finalists.
The newly expanded site will also include the comments of two bloggers, educational material, and a gallery of children's art inspired by the competition.
The quadrennial competition was founded in 1962, four years after pianist Van Cliburn stunned the classical music world by winning the Tchaikovsky International Competition—he is still the only American to have done so—and is held in his hometown.