[Conmasfra]

Hey i have been trying to play games with my headphones and chat with friends over skype and steam chat at the same time. When im no in a call my in game audio and people talking over game voice chat goes in my headset but when i start a call it switches me over to speaker and makes it so my voice chat comes in my headset but in game out my comp speakers ! i have tried disabling my speakers but that didnt work and have tried making my headset my default device but my comp wouldnt let me ! i was wondering if someone knew how to fix this !