Registration process:
After you have installed the program, start it and go to:
Options -> Preferences
Click on the tab called winamp pro
Click on the button called enter registration key
In the first field you have to type: Free
In the second field you have to type: N1EU0-ETU4Z-R1S04-FR7US
Click on the ok button
Your program is now successfully registered.

Screen:


Download: