You might need to meet a few requirements before you can migrate the licence key. According to their information, there is no possibility to migrate it to another computer. I recommend you visiting the official website to find more information. Contacting them will also get you more details about the operation.
Quote from the official website:
The Activation Key will not be valid anymore if:
- You want to install eMedia on another computer
- You plan to format the hard disk
- You want to upgrade the Operating System (upgrade or reinstallation of Windows)
- You plan any action which will require to reinstall eMedia Card designer