nativelibrary

I have to use two native libraries: one is my own and the other one is 3rd-party. As long as I used them in separate projects, everything was ok. But now I'm getting the Exception Ljava/lang/UnsatisfiedLinkError . I'm using Eclipse. I found out that if I place the existing library in libs/armeabi, Eclipse begins compilation of the native code and it fails. If I rebuild the JNI part from the command line, compilation succeeds but the 3rd party library disappears. Really stupid. So how do I tell Eclipse to use an existing .so library along with a library that must be built? The libraries are

I am trying to read portable devices from java signed applet.... I found a jmtp library on http://code.google.com/p/jmtp/w/list to get access to portable devices but when i run it in netbeans it gives error Exception in thread "main" java.lang.UnsatisfiedLinkError: no jmtp in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1860) at java.lang.Runtime.loadLibrary0(Runtime.java:845) at java.lang.System.loadLibrary(System.java:1084) at jmtp.PortableDeviceManagerImplWin32.(PortableDeviceManagerImplWin32.java:38) at jmtp.PortableDeviceManager.(PortableDeviceManager.java:34)