A number of professional tools for WavePad are only available if you have purchased an upgrade to WavePad Master's Edition.

To view pricing and to purchase an upgrade to WavePad Master's Edition please open https://secure.nch.com.au/cgi-bin/register.exe?software=wavepad.

Once you have purchased and activated your license you will receive a registration with your name and contact details. Use the menu File -> Register Master's Edition Upgrade and enter the details exactly as they appear in the registration.