Refer to the following questions and answers.
Q1: How can I use Spotify Connect on a Blu-ray Disc Player device?
A1: Check the FAQ below:
Q2: My Spotify mobile apps cannot detect the connected device.
A2: Please make sure your mobile device and device are connected to the same network.
Q3: My Spotify mobile apps cannot control the volume on the Blu-ray Disc Player device during Spotify playback.
A3: You need to manually change it by using the Blu-ray Disc Player remote controller.