The Rainify Skin lets you add a terrific transparent look to Winamp that can stand on its’ own or blend in perfectly with the Rainify Rainmeter Skin.
To install the skin make certain Winamp is set on a modern theme, unzip the theme folder and add it to Winamp’s Skins folder in Program Files. Go to the Skins Menu and select Rainify.
At first the skin will be at 100% opacity. Right click to access the Main Menu, go to Window Settings, then Opacity and select the level that you like best. If you happen to be using the Rainify Rainmeter skin the recommended opacity setting is 80%.
Rainify Winamp [deviantART]