From flickrSome time ago, I stumbled into this lifehacker page, suggesting a IBM-developerWorks tutorial on how to install a few things to your system to be able to... whistle control your computer. Whistle a tune, open Firefox. These things. As geeky as I am, I had to try it. Small problem: the tutorial is for Linux/Windows and I was on a Mac. Big problem: it turned out to be slightly outdated,