I would like to set catalook up to sell online training.

Example
Customer can buy access to Online Training Videos but not be able to download the video to their computer. After purchase they need to view the video from inside the store.

Some how the purchase would give the client unlimited acces to a site page with the training video or a link to the training video inside catalook. The video would only be viewable inside the store.

Do you have any sugguestions on how this could be done