A free diagnostic plugin used to test if your WordPress install is likely to support Symbiostock Video. If you install this and everything works as expected, it is likely that your system will support Symbiostock Video.
You can purchase Symbiostock Video here: http://www.symbiostock.org/product/symbiostock-video/
Note: As this is a large plugin, installation via the WP web interface may not work consistently. In this case, simply unzip the plugin, preserving the directory structure, and upload to your wp-content/plugins directory.