This is where you purchase a download of all the files from the CD.  You should first read the description of it here, to be sure that it is what you want.  There is a link to return you back to this page at the end of that description.

If you add this item to your cart and buy it, you will be able to download a link to click on. The files are quite big, totalling 227 MB, so inevitably they will then take some time to download - a few minutes perhaps. What you will get eventually is a zipped folder. With Windows on a PC, right-click on the folder to get a menu and choose 'extract all...' or 'unzip...'.