Hi Scott

Unless you have a boatload of time to spare, forget it. (It could be done but the amount of work involved to make it sound anything like is painstaking)

If you really like it, get a Laptop with a high quality external soundcard with ASIO drivers, then Midi it to your keyboard.

BTW: Also have a listen to this one from Acoustica http://www.acoustica.com/pianissimo/index.htm

Hope this helps

Bill