Thanks for replying. It seems like you have to study sfz file formats first...
I tripped over the following explanation on
[link=http://sonar.sonarama.com/index.php?title=Sfz_and_Grand_Piano_Part_1]http://sonar.sonarama.com...and_Grand_Piano_Part_1[/link]
The filename is: grand piano 3v m3 rt sim.sfz.
grand piano: The type of instrument originally sampled.
3v: It has three sets of samples triggered by three velocity levels.
m3: The original piano was sampled at every minor third along its entire range.
rt: This file uses the release trigger feature.
sim: This file also uses the resonating string simulation.
This already helps a lot in understanding what is going on.