Alexandre - I know it's too late for this now, but in the future these things can be easily recorded without any concern regarding the traffic in the booth.. you merely need to have a capture device recording the feed from the presenter's computer, and a feed from his microphone into a decent audio field recorder. Then, just pull the two feeds together into an NLE, synchronize, export, and publish. Sure it won't be cutting edge production value, but the presenter's screen will be clearly visible, and their explanations clearly heard... this is all we need / want.
