This is a program I wrote for the Nintendo DS, based off of the DSMI library by 0xtob.  To sum it up, it turns your DS into a musical instrument.  It lets you "draw" musical ideas and shapes in a manner that is both easy to pickup for a non-musician and also consistent/coherent enough that those who are trained musicians can have a high-degree of MIDI control through the interface.

It has two modes of functionality: a basic mode in which the DS uses the built-in synthesizer to output audio, and an advanced mode which allows you to connect to a local wireless network and use it as a fully functional MIDI Controller.

You must have the DSMidiWifi Server Application running on the target computer for the computer to receive the MIDI messages sent from the DS. I've thrown together a bundle containing the Macintosh version of the program, as well as a script I wrote to configure a manually-hosted network for the DS to connect to and a reason file that works as a demo of some of the features of my MIDI-Jammer program.