yeah, JFugue is cool,
is it based on Java Sound API? I guess so.
note that there are three different soundbanks for the java synth (a wave-rom sample player in software)
the 3 different can be found here:
http://java.sun.com/products/java-media/…soundbanks.html
I suggest to install the deluxe sound bank, with it's 4.92MB it's called "mamooth" but compared with nowadays hardware sample wave rom players, like the popular synths from Yamaha, KORG, Roland, Kurzweil, NORD etc. it's more like a tiny mouse
however it sounds pretty good.