I just had a thought. What if the unit/lesson instructor records their lesson as a podcast? All they would need is some basic recording software (eg: Audacity is incredibly simple, and freeware, I use it for my own weekly podcast) and maybe if we went that route Fraser could host the .mp3 on his libsyn.com account and link to it here.

__________________
I was just sitting here contemplating the immortal words of Socrates who said, "I drank what?"

"Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot." --Carl Sagan "Pale Blue Dot"