It looks like the sound is still a little messed up. This has been happening using just the Window User Interface but now, the Settings-System-Sound is doing the same thing.
What is it doing, you ask? Well, say you are listening to music on a Bluetooth headset. You just happen to open the Sound settings and the Music stops playing in the headset. Close the Sound settings and the music comes back.
If you are using internal or wired speakers, the music does not stop playing through those devices. I suppose it is somehow related to the fact Bluetooth and USB audio devices do no go through the onboard audio processors..
It can be really annoying... after some messing around, the sound stops on the headset but will continue on the speakers.
It seems it was working yesterday, so perhaps the Bios Update I received is involved.