Hello iceSHOUT,
You need to change your license key, you can download the key update utility from:
http://www.centova.com/clientdist/cc-license-update2.zip.
Inside you will find a README file with specific instructions, make sure to follow them precisely.
After you have performed these steps, the update will be complete and Centova Cast will immediately start using your new license key.
If you have any further questions or concerns, please don't hesitate to ask.