Apply motion track to object

I am trying to place a plane in a movie scene using 4 corner pinning and the motion tracker in version 2.62. I was following Sebastian König’s tutorial at http://vimeo.com/25516157. The basic workflow is: track the four corners in the movie clip editor, apply the tracks to four empties in the 3d view and hook the 4 vertices of a plane to the empties.

Tracking the four corners is easy enough, however to apply the track to the empties the tutorial uses a tool called ‘Convert track to f-curve’ (at 15:40 in the video). I cannot find any such tool in my version of Blender.

How then do I apply the motion track to an empty (or any other object) in the 3d view?