I have done tons of research and have found a way to fix this issue after many weeks of looking for a fix. Please +1 or like this article if its helpful and or register and leave a comment, thank you kindly.

If you are having issues with any of the following: 1. If you are having issues with your LG G3 not sending metadata over Bluetooth for Spotify, Google Music, Rdio, Mog and any other app for streaming music 2. If your phone is not sending metadata over Bluetooth for Spotify, Google Music, Rdio, Mog and any other app for streaming music

Go to the Google Play Marketplace and install this app https://play.google.com/store/apps/details?id=com.anticsoft.autoaudio

To set up, do the following, make sure all streaming music programs are off, start AutoAudio-Bluetooth Helper and run in persistent mode. This app will correct the software issues certain phones have with streaming data over Bluetooth. Now all you have to do is start your streaming music app and you are all done, your metadata will now display on your Bluetooth device.

by Joe Lovrek