I'm thinking the only way to get it to switch from your keyboard / headset to your speakers you will need to remove the two audio jacks from your computer that are part of the keyboard. It's the fastest way for your computer to see your surround sound speakers. Just plug those two jacks back in when you want to use your headset. It appears that your computer doesn't realize you have two separate audio headers. Seems like your motherboard can't see two separate audio headers.