I only have two optical connections on my receiver, but I have need for three (XBOX, DVD, CD player). Right now I am switching the DVD and XBOX optical cable when I need them. So the one not being used has it's optical cable just sort of laying out in the open. Any chance of harming the cable or hurting performance? I don't see any other way to do this because I'm not going to switch them completely between the two and I don't want to use the XBOX as my DVD player.