pauseSound ({ getters }, id) {
      const sound = getters.getSoundById(id)
      if (!sound) {
        throw new Error(`Sound ID does not exist: ${id}`)
      }

      sound.pause()

      return id
    }
Pauses a playing sound.  Noop when sound is not playing.

@param id {string} ID of the sound to pause.

@return The ID of the paused sound

@throws {Error} when invalid ID specified