Yeah - it is expressly written into the license acceptance dialog, and the person registering the initial purchase had to check boxes that indicate single-owner (non-transferable license), and one machine at a time.
The Cakewalk folks have always relied on the trusticity (I know that is a made up word, but I like it), of the users to be honest in the use and respect for the licensing - they could have gone the iLok route, or some other licensing management mechanism, but instead they rely on trusting us folks who buy and use the product to not give it away.
Thank you for your honesty with the situation. :)
Bob Bone