Fast-forward to "Jupiter and Beyond the Infinite". Wait until the monolith appears in the center of the screen, shortly before the light show begins. Start the song about a nanosecond over two-and-a-half seconds before the monolith fades out completely.

Checkpoint

The main riffage (00:55) after the drum buildup should come in just as the camera cuts from Dave's shaking face to the light show.