I better add my voice to this as well, the link sends you to version 1 not version 2 so they do need to update the link !
Link broken for the Mac download in the email I received for Soundbox with the download link and the key. Both links only down;had the Windows version to my Mac. I successfully downloaded and entered the key for Animationbox and have been using it. Box 2.3 downloaded well and is operating properly. I would like to start digging into soundbox asap. Thank you.