My Samsung 40" LCD HDTV-LN-S4095D has only two HDMI ports. Those two are currently used by my DirecTV HR 20-700 and a Samsung Blue Ray BD-C6500. I'm looking to add Apple TV but need one more HDMI port. What are my options? Would a HDMI hub or switch work to give me more HDMI ports? If I'm sharing say the Blue Ray player and Apple TV via the same HDMI port on the TV, will I encounter any issues? Thanks in advance!