I am having an issue that I would really appreciate any help I could get. I am wanting the audio that normally goes thru my TV (LG 43LH5000) to work on my Sony Blu Ray Player (bdv-e3100) speakers. I have tried hooking up my TV with A/V composite cable with no luck. Very frustrating. Wish they would keep this simple.
Actually, you have choosen a rather simple set up. Incompatible, but simple. Sadly, your choice in a television has zero possibilities for sending audio out so it isn't possible. Your LG 43LH5000 has no output capability at all. It doesn't have HDMI ARC, optical output, or RCA out. Every jack on the back of the TV is for feeding audio and video into the TV and none is for sending any type of signal out of it. You're out of luck. Simple is often inflexible.
You need to step up in price point and features to get audio out from the TV.