Which Blu-Ray player do I need in order to be able to connect to the sound system and projector?

la
1

I would like to make a film evening with about 20 young people. For that it takes more NEN Beamer.

I already have a projector and sound system. But my laptop can only play normal DVDs.
Therefore, I would like to use a Blu Ray player. But my "only" has an HDMI output (which I connect with the projector… Beamer has no audio output). Therefore, the Blu-Ray player would need a corresponding output.

What do I need there? My Blu-Ray player has a LAN connection and "Digital Audio Out". I thought the Digital Audio Out would have to be the connection for the sound system. Now I'm told that will not work.

What kind of Blu Ray player or what kind of connection would I need then?

Gr

Preferably a device with HDMI and RCA Audio OUT (analog audio RCA output).
This almost always works on the audio amplifier.