projecter

Hello, I have an Epson projector and just purchased a vizio 5.1 home theater sound bar. My current set up is : Firestick connected directly into projector and using the Bluetooth feature the Firestick has to connect to the vizio sound bar. Doesn’t sound the worse but I feel it can be better...

I bought a Oldish projector, Discovery, and it has an rca hook up, so i bought a Hdmi converter to hook it up to my laptop, when i plug everything in i only get audio, help?