Change Audio Device

Just setting up the settings and options screens for our game we have not seen any examples on how to switch the audio output device. Can anyone point me to a example or give me some pointers on how to switch the audio output device, particularly, how to have a different output for voice than for effects, for example. So you can switch the game sounds and music to come from your speakers while having the communications come through your bluetooth headset, for example.

Thank you!