This link includes compressed files (zip) that have all the teachings in a single download chapter by chapter.
And it contains all the classes individually in case you have trouble downloading the big, bulky zip files.
Downloads 1-8 are the zip files.
Download 9 is a PDF file with the contents.
Downloads 10-50 are the individual files.
* Please note: the zip files could take a while to download.
** These links do not expire.