My digital audio out does not appear to work nor

My digital audio out does not appear to work nor is the regular out (white and red consistent). I want to plug in Direct TV and DVD via HDMI and use a signle digital out to the amplifier--doesn't seem to work--problems arose when I got a new Blu-ray that only had optical out my other one had coaxial digital out.

This would also solve problems of changing selections on the amp

any suggestions as to why the digital audio out isn't working?