How do I use the Offline Edition with Mac OS X?

After downloading the Offline Edition from the Downloads page, "offline.zip" appears on the desktop. Double click this file.

A new "musictheory.net" folder will appear (Figure 2). Double click this folder.

A new window appears which contains two items - a "files" folder and a "START.html" file.

Double click the START.html file to use the Offline Edition.