This synch requires the widescreen version of the film.

During the JaBtI sequence, there's a long panning shot that crosses the face of Jupiter, follows the pod on its exit from the ship, and finally focuses on the monolith floating around in the void. At the very beginning of this shot, we see a couple of Jupiter's moons. The very instant that the first moon disappears completely, start the song.

Checkpoint

The trippy bass section of the guitar solo should come in at the exact moment that the tunnel sequence begins.