Pianissimo will work for 7 days before it must be registered with a valid ID and registration code.  A registration code can be purchased from our web site,

If your version of Pianissimo is unregistered, this Register button will be visible in the upper left hand corner of Pianissimo:

Pressing this button will bring up the Registration Dialog:

Enter your Registration ID and Registration Code, and press the Register button.  If you've entered your ID and Registration Code properly, Pianissimo will immediately become registered, and the Register button will no longer be visible.

If you have any problems registering Pianissimo, please contact Customer Service.