Comment by wonger_

You should! The browser APIs are straightforward:

  navigator.mediaSession.metadata = new MediaMetadata({
    title: song.name,
    album: song.category,
    artwork: [{src: song.imagePath, type: 'image/jpg'}]
  })

  navigator.mediaSession.setActionHandler('play', player.play)
  navigator.mediaSession.setActionHandler('pause', player.pause)
  navigator.mediaSession.setActionHandler('nexttrack', player.nextTrack)
  navigator.mediaSession.setActionHandler('previoustrack', player.prevTrack)
  // song and player are instances of state

Then you get those native media controls. Even stuff like "hey google, play/pause/skip"