setupMusic = shotSetup => {
  if (!shotSetup?.music) {
    return
  }

  const { music } = shotSetup
  if (music.files) {
    return music
  }

  // Music is in legacy format, normalize to new format
  return {
    files: music,
    loop: false
  }
}
@param {ShotSetup} shotSetup
@returns {Sound} possibly contains `mp3` or `ogg` property.