Three solo instrument files, origClar.wav, origSax.wav, and origTrb.wav are mixed to a monaural file, mixture.wav. The separation program then creates files sepClar.wav, sepSax.wav, and sepTrb.wav. The method is described by this paper . If the files don't play back using your browser plugin, you can download them using "right click" (Windows) or "option click" (Mac).