Thanks for the reply SpaceJim. I have tried other .wav files, about 6 (stereo) files total. All play in mono. I did play around with the balance controls but I can't remember what I did exactly because it was a few weeks ago. I haven't tried to play a mono file, that's a good idea though. I'll have to render one and see what happens, and play around with the balance settings in WDL some more maybe. Thanks again.