I just found to how to get the editor. Should be a download button named "Helix editor' (silly really)
You use the line6 updater for software on the Helix itself.
You download the helix software onto you mac and install. This feels counterintuitive but then you'll find Helix program in your Line6 folder next to the updater.
http://line6.com/software/readeula.html?rid=7277