"Unlock" the Audioslave song

Audioslave has a nifty gimmick to promote their upcoming record, "Out of Exile": They're making one song from it, "Your Time Has Come," available for free download -- but only after a million fans have gone to this page and clicked on a link to "unlock" the song. The download is, for some reason, PC only, leaving us Mac users out in the cold. But given how disappointingly mediocre the coulda-been-great Audioslave's past offerings have been (the band is Rage Against the Machine with Soundgarden singer Chris Cornell in place of Zack de la Rocha), perhaps that's the best place to be.