I am trying to get the audio set up from my Benq W6000 projector to my Sony DVD home theatre system model number DAV HDX589W. I have my roku plugged into hdmi 2. There is only one hdmi plug in the receiver and two in the projector. I am trying to use a white and red to 3.5 aux to connect the sound but it is not working. Any help that yall can give would be much appreciated. Thank you in advance.