# File lib/rubygame/music.rb, line 362
  def fading?( direction=:either )
    return false unless current?

    case direction
    when :in
      SDL::Mixer.FadingMusic() == SDL::Mixer::FADING_IN
    when :out
      SDL::Mixer.FadingMusic() == SDL::Mixer::FADING_OUT
    else
      SDL::Mixer.FadingMusic() != SDL::Mixer::NO_FADING
    end
  end