Since a while the mediathek of 3sat doesn’t work correctly for me.
On the player’s site, I cannot reach the direct download-link, because other div’s cover it… You can see it in the screen-shot.
Because I don’t like that plugin-stuff, the media object is really senseless for and so I can shrink it that the link becomes visible. The method is clear: UserScript!
With this small piece of code the link becomes reachable and it is on that position where the mouse-pointer should hang around when you have left the previous site ;)