I'm looking to purchase an optical splitter, my current AV receiver only has 1 optical port which is currently being used by my Xbox 360. Now rather than having to constantly switch between my Xbox 360 and AppleTV, is it possible to get a 2 way optical audio splitter, which I can plugin both into, and then into the 1 port on my av receiver? If so, are there any drawbacks to doing it? Do they auto detect which one is in use? Can anyone recommend one inparticular?