SoftSkies is a real-time music visualizer for media players and can also visualize auxiliary or "line-in" audio. SoftSkies features hundreds of effects, savable and scriptable effects, and interactive on-screen customization. SoftSkies is designed to be visually engaging and extremely reactive while allowing you to customize and control it.
Note: the price on the listing reflects the "Gold" purchase option. There is also a "Platinum" option and you can learn more about it here.