We have added an option to stream your purchased videos online, on the order details page, in addition to download links. The streams will be available for the duration of 3 to 5 days after your purchase (5 for videos published within the last 2 years), basically, active as long as your downloads are active. You can visit the order page through your profile, or just click on the new streaming link in the order confirmation email:
Here’s the player (players, if multiple videos are bought) on the order details page:
Streams will expire with the download links, so if you want to return to the videos and watch them after a while, download the files, as usual, and store them locally.