LivePlanet, an online entertainment outfit founded by Hollywood superstars Matt Damon and Ben Affleck, says it will be using digital movie-making products from Avid Technologies, a software company with an Oscar win of its own. The partnership will help manage Project Greenlight, LivePlanet's joint venture with Miramax and HBO. Project Greenlight is an online amateur screenplay-writing contest. The winner gets a $1 million budget to produce the movie. Miramax television will chronicle the making of the movie in a 13-episode documentary series slated to air on HBO early next year. Avid Technologies is based in Tewksbury, Mass. In 1999, the company won an Oscar for its digital film editing system.