I posted a video of this a few days back, and now the app arrives. Here’s the description:
Transform your iPhone/iPod touch into a 16 Pad MIDI Controller with no extra hardware!
Quick and easy solution when wireless is unavailable.
Just hook up to your computer’s Line-in with a standard male-male 1/8″ jack lead.
Then download the free software to convert the app’s special audio signal into midi messages… Magic!
Get the software here:
http://alkex.com/magicmidi
Compatible with Mac,Windows and Linux. The app is priced at $1.99.