The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Lithos Robotics Corporation:
CommandLink Overwatch allows law enforcement customers to interact with Lithos Robotics' CommandLink Overwatch hardware. Prior purchase of CommandLink Overwatch hardware from Lithos Robotics Corporation is required to use this application. CommandLink Overwatch utilizes FFmpeg libraries (Copyright 2000-2012 Fabrice Bellard, et al.) FFmpeg is a free software licensed under the GNU Lesser General Public License (LGPL) (http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html) FFmpeg is a trademark of Fabrice Bellard, originator of the FFmpeg project. Source code for FFmpeg can be found on the FFmpeg web site (http://ffmpeg.org)