Ghetto guitar synth with Linux/Ingen
Playing guitar through Dave Robillard's fabulous Ingen audio processing environment, using a pitch detection LV2 plugin I wrote using Paul Brossier's marvellous Aubio library. The audio sync is a bit off I'm afraid, but you should get the gist of what's going on.
As well as showing off the pitch detector plugin, this serves as a bit of an introductory tutorial for Ingen.
Boring technical stuff that might as well be Martian to most people: You can get the source code for the pitch detector LV2 plugin with:
svn co https://tubbs.trition.org.uk/audio/lv...
The bad news is that it currently requires the trunk version of Aubio, which will become 0.3.3 when it is released. So you can't actually run this without getting your hands a bit dirty yet.