Assuming windows. Go into sound, make sure both the wireless headset and speakers are enabled. Change to the "recording tab" and you should see a device called "stereo Mix". Go into the properties and change to the "listen" tab. Check the box "listen to this device" and then under "Playback through this device" select the G933 device from the list. Windows will now mix the playback (even though its under "recording"). If the G933 is not in the list, then it is probably disabled and you need to right click and enable it in the playback tab.