xLights is program for sequencing LED pixels and other lights to music. It provides a complete program for modeling the target display (normally the users house or yard) in either 2D using a picture as a background or in full 3D with a stand OBJ model.
The user can add models such as trees, arches, candy canes, etc... to their display. Each model has a set of user settable properties for configuring the types of LED pixels, the number of pixels, etc...
When the display setup is complete, the user can create a sequence by loading a music file and then mapping various effects onto each model based on the timing and other cues in the music.
Finally, the user can test their creations by outputting the data directly to the controllers that are controlling the lights. xLights supports a wide range of controllers from standard e1.31 based controllers, ArtNet, DDP, DMX, PixelNet, etc...
