Immersive Audio Album published a short, helpful primer this morning on how to play Atmos music at home--from a Blu-Ray or a file, using a hardware or software media player.
https://immersiveaudioalbum.com/2021/05/how-to-listen-to-dolby-atmos-music/
https://immersiveaudioalbum.com/2021/05/how-to-listen-to-dolby-atmos-music/