Have you tried ...
SecurDataStor
*www.encryptx.com/small_business_downloads.php
Other alternative is to zip entire folder contents and password protecting it before burning it onto the disc. ....
But as the saying goes,
FOR EVERY HIGHER WALL, THERE IS A TALLER LADDER ....
You will be making things more complicated for yourself. Why not store the CD securely rather than password protecting it ??