For this Example you will need There is a more detailed writeup available at http://www.benmcchesney.com/blog/2011/09/fft-visuals-in-open-frameworks/ I have now included the addons to work with this version. You can find them inside the 'community_dependencies/' folder. I had to make a few adjustments to MSA libs for 0071. ofxFFT by Kyle McDonald http://code.google.com/p/kyle/downloads/list Some MSA Libs by Memo Akten https://github.com/memo/msalibs ofxMSAInteractiveObject ofxSimpleGuiToo OF Core : ofxXmlSettings