I have a 2 year old MacBook Pro that I am trying to hook up to my new Phillips lcd tv. I have a HDMI-F to DVI_M adaptor and an HDMI cable I picked up too. The image transfers no problem but the audio is coming from my laptop. Do I need another cable or is this a setting on my MAC that I should adjust? I tried searching around but couldn't find much, maybe I wasn't looking in the right place. Thanks in advance.