The National Software Laboratory has announced ArraySync 1.0.1, an update of the tool for synchronizing QuickTime playback on multiple displays attached to one computer, or across a local area network. It’s a free maintenance update for registered users.

ArraySync allows you to create video walls and multi-screen demonstrations without specialized hardware. It’s scalable, and can run entirely on hardware you already own. You can synchronize two displays or a hundred.

With ArraySync, you can use a Mac server to control PC clients, or a PC server to control Mac clients, or mix and match Macs and PCs in any combination you can wish. ArraySync’s underlying protocol is platform independent.

You can mirror one video across your network, or combine displays to build a video wall and span one video across it. The National Software Lab’scompanion utility, ArrayShaker, allow syou to break up your media into multiple segments and distribute them to ArraySync clients powering your displays. Mac users also have the option to span videos directly without preprocessing with ArrayShaker.

ArraySync and ArraySync Client require a Mac running Mac OS X 10.4) or later, or a PC running Microsoft Windows XP SP3 or later. ArraySync for Mac is a Universal Binary and will run on a PowerPC G4 or higher, or any Intel Mac.

ArraySync 1.0 for Mac OS X and Windows is immediately available for purchase and download from NaSoLab’s web site ( for US$29.99. ArraySync Client 1.0 for Mac OS X and Windows is immediately available for free from NaSoLab’s web site. ArraySync and ArraySync Client for the Mac App Store are pending Apple’s approval. ArrayShaker 1.0.1 for Mac OS X is immediately available for purchase from the Mac App Store. ArrayShaker for Windows and Mac OS X will be available for purchase directly from NaSoLab’s web site in late February.