Click on the "Help" menu at the top, and select "Enter Registration Code..."
The Mixcraft 9 Registration ID and Registration Code are unique identifiers that are required to activate and register your copy of Mixcraft 9. The Registration ID is a unique identifier assigned to your software license, while the Registration Code is a code that unlocks the full features of Mixcraft 9. Without these codes, you will be limited to the trial version of the software, which has limited features and functionality. mixcraft 9 registration id and registration code