Hello,
I'd be interested in hearing more about this requirement if you think I can help.
I have been designing elearning packages for over 10 years and would be happy to discuss your needs in details. I can use Captivate, Camtasia and StoryLine.
There is a sample video I made her from a training course I run, on how to spot and correct errors in videos and on line content. You will need audio. [!]
Look fwd to possibly hearing from you.
Best wishes
Andy