How Do I Set Up TrueHD on PS3?

[robertc88]

I have "Stomp The Yard" BD which has True HD track. I selected it for playback for the audio.

Under optical for PS3, I have all options checked for "ON".
For HDMI, I selected "Automatic".

Am I suppose to use optical input on my AVR (in my case "CD" was set to this) or HDMI input (in my case "DVD" was set to this).

Should I be using an optical choice or HDMI choice on the PS3 for audio playback?

Thanks in advance for your help!

Either of the inputs I try on the PS3 or AVR, I cannot get True HD to light up. Both the AVR and PS3 support it.