I have the first model of the 13" MacBook Pro with the Mini Displayport to HDMI converter. As far as I can tell, it only carries video despite the fact that HDMI normally carries both audio and video. I believe the newer MacBook Pro's can send both audio and video. Is this related to different hardware in the computer? If so, can I upgrade my hardware to send both audio and video out of my Mini Displayport? Or if there's an easier solution... let me know! Thanks!