Problem using external library

Hello everyone!

I'm trying to use the JavaFX plug-in (http://download.exadel.org/javafx_plugin/updates/nightly/) with the library WiiuseJ (http://code.google.com/p/wiiusej/).
After adding it to the project Build path I try to run this code:

/*
*Test.fx
*
*Created on May 3, 2010, 11:46:41 AM
*/

package iu;
import wiiusej.*;

function run(args : String[]) {
WiiUseApiManager.getWiimotes(1, true);
}

This statement works fine in a java file but with JavaFX I get the following output:

java.lang.UnsatisfiedLinkError: no WiiuseJ in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at wiiusej.WiiUseApi.(WiiUseApi.java:29)
at wiiusej.WiiUseApiManager.(WiiUseApiManager.java:43)
at wiiusej.WiiUseApiManager.(WiiUseApiManager.java:35)
at iu.Test.javafx$run$(Test.fx:11)

Can anybody help me?