Hello, I am getting the Razer Tiamat 7.1 and Asus Maximus VIII Extreme mobo . Now, I saw that I need all the audio ports for the Tiamat to give 7.1 surround sound. But I also have a 5.1 speaker system. So, do I need to get a 7.1 sound card if I wanna have both the headset and the speaker connected together ?