I'm having a problem with Windows Media Player volume. Until yesterday, I had the volume all the way down at 9, and it was plenty loud through my earphones. Turning all the way up was actually painful. All of a sudden, it now has to be all the way up to 100, and is not as loud as it was on 9. Spoken voice is nearly inaudible. I checked the Control Panel, and the sound volume is full blast. The earphones are plugged in properly. Any ideas?