Hello solveignovice,
Thank you for purchasing our software. Upgrades within the major version of the product is free.
The latest version is 2.2.912.18, 2009 Dec 18, it is available at the link below.
http://http://www.solveigmm.com/?Products&id=VideoSplitter#Download
Just download and install it. it can be registered with the key of 2.1 version.