How to keep sync between timelines in different scenes?

I’ve been working on a stereoscopic toolkit for Blender and am able to view a 3D scene as a side-by-side image, like this:


(It’s super easy to view an image like this in 3D with these particular 3D glasses: http://www.berezin.com/3d/pocket_3dvu.htm )

The issue I’m finding is that each window (which contains a different Blender scene) has its own timeline with its own value. I can’t find a way to synchronize the scenes so that all three windows are showing the same frame on the timeline.

How can I keep the timeline synchronized between all of the scenes?

Thanks!

Never mind – I just figured it out. In the timeline window, choose Playback -> AV-Sync (make sure it’s checked).