PatternPaint
Making beautiful light shows is as easy as drawing a picture with Pattern Paint! Simply plug in your BlinkyTape, run Pattern Paint, and draw away!
For instructions, see: http://blinkinlabs.com/software/patternpaint/
Note
This is the source code for PatternPaint. Release versions will be provided as available.
Developing
PatternPaint is written in C++ with QT (5.1.1) libraries. The easiest way to get started is to download QT Creator (2.8.1 at time of writing), and open the project file: http://qt-project.org/downloads