I need help setting up my MXQ Pro box to my Yamaha RX-V581 . I purchased an optilink full to 3.5mm optical cable cord that fits but no sound comes out. It like it’s to old to connect to get sound. What can I do someone said convert it? The box only had one HDMI slot. I want to use my house surround sound an not a choppy Bluetooth Option. Any advice?