dvd to proyector pic but not sound

[jaguilera13.ja]

I have a proyector and dvd blue ray sony connected true hdmi and only 1 dvd works perfectly pic and sound but hall the rest not work only picture not sound at all please i need an answer.

 

[jaguilera13.ja]

I dont know but i let them on for time and just work looks like the two sistems have to configure them selves and then work's after they got recognize.