Is there some sort of device out there that allows me to plug in an HDMI into my computer and view it through my computer? I have an Xbox 360 and a computer both connected to my tv. I am tired of having to get up and switching the input between the two HDMI cables, so can I buy a device or something that allows my to view my Xbox through the computer? I am fairly new to computers so explaining why or why this won't work would be great.