Solved! How to connect speaker amp to projector with LAN / CAT 6

Oct 24, 2019
I have a socket and HDMI cable on ceiling for projector in home cinema room., the HDMI exits out from wall in cinema room next to 2 co-axial ports, 2 CAT 6 ports and power sockets in the same room. There are cables for 4 surround sound speakers and one subwoofer in the cinema room however these cables go downstairs to a 'server' room with cabinet/rack which is where main internet router is located; the amp for the speakers will have to go here. How can I connect the projector to the speaker amp?? Can I use a media player (e.g. Firecube) located in cinema room which can be connected to projector with HDMI and connected to LAN via CAT 6 ethernet cable to the speaker amp downstairs..?? Please Help!! driving me mad