RAINMORE

When I try to connect my macbook with my 46″ Sony Bravia by a HDMI cable, I could not get any audio.

After searching on google, I realize that only HDMI 1 support PC-in audio. None of the other HDMI port support it.

Hence, my configuration is as following:
HDMI 1 -> macbook
HDMI 2 -> blue-ray
HDMI 4 -> PS3

Here is a problem. Why does Sony put HDMI1 and HDMI4 together?