Earlier this week Apple introduced iLife '08, and with it a radically redesigned version of iMovie, the popular software Mac users can use to edit and publish their own digital movies. Apple has now released iMovie HD 6 , the previous release, as a free download from its Web site. iMovie HD 6 has been released, according to Apple, "for those who have purchased and installed iLife '08." The download clocks in at 154.6MB. System requirements call for a G4 or better, including Intel, 256MB RAM, mac OS X v10.3.9 or Mac OS X v10.4.3 or later. Additional requirements are necessary for some effects and HD video processing.