Spectator is the online software for viewing the races. You don't have to download anything, just follow the hyperlink.

The race is loaded after starting up. Then click the competitors you want to see in the column on the right. You can select and view all competitors bij clicking the top most check mark. 

The race starts. By clicking on one of the competitors, the screen will focus and follow him.

Dubble clicking a competitor opens a new subscreen with 'on board' information. Speed and hart rate (when using a hart rate monitor) is shown. In future, other information like course, wind data, etc will be added.

On the left hand side of the screen, various buttons controll the map to 2D, 3D, zoom, etc. You can speed up the race by changing the replay speed at the top of the screen.