Why Can I No Longer Download Video ?

Ripple Training has some 50 free video tutorials which can be watched or downloaded.

http://www.rippletraining.com/freetutorials_oldies_butgoodies.html

A couple of years ago I downloaded a few of them by simply control-clicking and selecting something like "Download file" from the contextual menu.

I cannot remember whether I was using Safari, Firefox or something else at the time.

Now when I try it (in Safari or Firefox) there is no way I can download. (All I get occasionally is an advert for QT).

Is this some functionality that has been removed by subsequent OS etc. updates ?

Any ideas how I can get it back without forking out the spondulicks ?