Thanks, Andrew, for your detailed instructions. You must have put in a lot of time in responding to my questions. I really appreciate it. I don't have time to get to it just yet, but I'll return to bring you the results--which should be positive.
By the way, in your future releases, could you consider implementing an option that can control the number of times a particular user can play a video/audio clip or see an attachment? Is that feasible at all? I think that's very useful for someone like myself who is doing an online course with lectures in audio/video formats--because I want to give access only to the few of those who have signed up for my class. I can't find this kind of mod. anywhere on this vB.org forum, and I believe that other users would love to have this option as well.