I am having a similar issue. Got a new pc with windows 10, installed all the drivers and everything for my GX, and the audio sounds garbled and metalic through the speakers attached to the GX. I tried setting the different 16 bit options etc. I have been a long time mac user switching back to windows, so I forget what options to try to resolve this. Everything shows up fine in license manager and monkey app, light is green on the GX. Any ideas?