idragosani(a)chapelperilous.net wrote: I can tell you how to do it with ecasound, but do you want MonoFile1.wav to be all the way in one channel (for instance only in the left speaker) and MonoFile2.wav to be only in the (other) channel (for instance) only in the right speaker (a sterio WAV that is 2 seperate "tracks"). Or do you want them both to be equal paning (a sterio file that sounds like a mono file). Or do you want a little of MonoFile1.wav to be a little more in one speaker, and MonoFile2.wav a little more in the other speaker (creative panning). I can show you any of the above. Rocco