I don't have the link right now but there was a forum moderator answer to this awhile ago. The statement made at the time was they were working on Microsoft to fix this very issue and allow us to select the audio device from within the game. I.E. go from speakers to headphones. I have 3 sound card in my machine and I can answer from personal experience that it all depends on the soundcard. My Soundmax will hotplug and keep sound but my creative labs will not. Here's hoping they come to a resolution soon.