Hi, so I have an LG 43UH6100 TV with a Bose Solo 5 soundbar connected through optical. I am wanting to setup a Bluetooth transmitter so I can use wireless headphones with my TV. On the back of my TV it has the red and white RCA connectors which is where the transmitter connects. However, when I go to settings and audio out I have no option to change from optical audio to rca audio. So how can I get it to work so I can transmit the audio from the tv wirelessly to headphones? Any help would be really appreciated, I have been really frustrated about this bc it seems simple but I can't figure it out.