Need to use default package for JNI code?

Hi,
I don't have much experience with JNI code, so excuse me if I make a silly mistake.
I have a set of DLLs to interface with Microsoft native speech code ("Microsoft Sam") -- a GPL library called Quadmore. Quadmore has some sample Java code to work with the libraries, all of which they put in the default package (no package). If I move their code to a named package, it breaks. The Java code is able to load th libraries, but can't find any of the methods.
Looking at the source for their DLLs (though I don't speak C++), the method names are things like
JNIEXPORT jboolean JNICALL Java_QuadmoreTTS_SpeakDarling(JNIEnv *env,jobject obj,jstring strInput)As far as I understand, this implies that the QuadmoreTTS.class that calls the code must be in the default package, as otherwise the method name needs to be prepended with a package name.
If that's so, then there's no way I can use the code as-is, right? Naturally, the rest of my program is in named packages, and I can't import any class that is in the default package, right? I've tried placing all their code in a jar and adding the jar to my classpath, but I still can't import any of their classes as they are in the default package.
Is the only solution to re-compile all their C/C++ code to let it use packages? Am I being dumb and missing something? I'm pretty sure other people have used Quadmore before, so I can't believe that they've never had this problem before.
Any suggestions greatly appreciated!
Sam

C/C++ functions in JNI must conform to the prototypes produced by running the javah compiler against the class file with native methods in it. So if you move the class to another package, the prototypes change. If you doun't change the compiled C coudes to suit, you will get undefined method errors when you load the dll as the JVM won't be able to match the native methods to the methods in the dll (it will call WinLoadLibrary() and WinLoadProcAddress() or somesuch under Windows).

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'4020004b1b7a56ca4cf7f6d35b40a4cb')
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pkgname=pspsdk
pkgver=2209
pkgrel=1
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Some explanation: I've used this one very often: --prefix=$startdir/pkg/usr/local/pspdev
Explanation: When I wanted to create only one PKGBUILD for the psptoolchain, some dependences were in $startdir/pkg. If you take --prefix=/usr/local/pspdev he won't get some depencies (mostly header files), which means I had to create single PKGBUILD's for every part of the psptoolchain (that would be 6 single parts).
Those --prefix-changes don't stop my psp environment from working! (tested it myself - I comiled almos all sample apps which were included in the pspsdk - and all compiled well)
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