Nothing free unfortunately, but you may want to see what can be achieved if done professionally.
http://www.crumhorn-labs.com/index.shtml
http://www.milandigitalaudio.com/wurlitzer.htm

The following is not software or free, (Sample discs are available for Korg and Ketron) but if you already have a Fantom you may be interested.
http://www.totaltransformation.co.uk/index.html

Hope this Helps.

Bill