See here the setup in Live:

It is made to convert incoming 2 monophic audio-signals (in this case: stereo piano) into midinotes to control midi-instruments within Live.
For me it works with Live6 and Mac OS10.4 and its a UB (G5&Intel) - the window fits best for a Powerbookpro.
For you its free (donationware) and you find the download here (10.4mb): http://www.pyrolator.com/blog/weblog.ph ... tomidi_11/
Sorry, but the "manual" is in german - I am to lazy to translate right now, maybe for the next version of it...
And: You do need Max/Msp Runtime 4.6.3 for it (get it free here: http://www.cycling74.com/downloads/maxmsp) - or the full version of Max/Msp.
comments are welcome, have fun with it, all the best for your work
pyro