Vixen Lights is a popular free software package which allows users to create lighting effects with a wide range of display technologies. Here, we'll provide 2 ways on using Vixen Lights with addressable LED's:

* Vixen Lights sends the entire display sequences to an Arduino for display on the LED's.
* Vixen Lights sends commands to the Arduino, which then sends FastLED display sequences to the LED's.

The first method is described here:

http://blog.huntgang.com/2014/11/08/vixen-lights-3-x-arduino-pixel-controller-ws2812b/