I have to headsets connected to my Windows XP SP3 PC. 1 of them is connected with old-fashioned wires, the other one is a Bluetooth headset, which uses a Bluetooth device that is connected to a USB port.
Before I start WMP I always make sure that the Sound applet of Control Panel is set to playback via the Bluetooth headset. After that I change the setting in the applet to the other headset, but WMP remembers the headset it's supposed to use. I have already used this mechanism countless times.
This morning I was walking through my house with my Bluetooth headset listening to WMP, when suddenly the sound was gone. The battery definitely wasn't dead, since I had recharged it the night before. Then I went to my PC, and the sound was now being played through the "normal" headset.
I have never experienced this kind of auto-switch before, and I can think of no explanation for it.
Any help would be appreciated.