Thank you, this was very helpful!
I accidentally disabled my headset while trying to figure out how to have my main speakers function while using my headset with Skype. It was only playing sound through the headset when I plugged it in.
Not sure if it is covered elsewhere on this forum, but it might be helpful to others that find this particular post... To accomplish what I mentioned above, I simply right clicked my main speakers and made them the "Default Device"... then right clicked my headset speakers and made them the "Default Communications Device".
there's also a setting in Skype to "ring on all devices" which I've activated, but I find that in the 4 years I've been using Skype, many of those functions work whether it's clicked or not !?!
Hope that helps somebody!