Either I completely missed something, or that's not what this site is about. It just takes the replay and splits it into one video per player and lets you play all those videos at once. It does not try to scrape the build order from the replay.
Something like http://code.google.com/p/phpsc2replay/ will get the actions out of the replay, but I'm not sure how far along that particular library is when it comes to turning the actions into the list of stuff that was actually built (while discarding pointless spamming of hotkeys)