Sorry for bumping into an old conversation. Firstly, double-check that your optical cable is securely connected on both ends. If that's fine, try changing the Audio Settings on your TCL Roku TV from 'Stereo' to 'PCM.' This can sometimes resolve compatibility issues. If the issue persists, you can try a different optical cable to rule out cable-related problems. I love Spotify, and I even buy Spotify plays for my music. I hope you'll be able to enjoy it soon!