if (audio_other_fade == true)
{
    if (audio_sound_get_gain(audio_to_fade) >= 0.2)
    {
        audio_sound_gain(audio_to_fade, 0, audio_fade_length);
    }
    else
    {
        audio_stop_sound(audio_to_fade);
        audio_sound_gain(audio_to_fade, 1, 0);
        audio_other_fade = false;
    }
}
if (bgm == -4 && audio_is_playing(current_song))
{
    audio_stop_sound(current_song);
}
else if (!audio_is_playing(bgm) && global.radio_restart)
{
    audio_stop_sound(current_song);
    global.radio_fade_out = false;
    current_song = audio_play_sound(bgm, 20, 1);
    global.radio_restart = false;
}