if (buffering == 0)
{
    bufferbar++;
    if (bufferbar == (bufferdelay - 15))
        songtime = audio_sound_get_track_position(global.batmusic[1]);
    if (bufferbar == bufferdelay)
    {
        bufferbar = 0;
        buffering = 1;
    }
}
else if (buffering == 1)
{
    if ((bufferbar % 15) == 0)
        audio_sound_set_track_position(global.batmusic[1], songtime);
    bufferbar++;
    if (bufferbar == bufferduration)
        buffering = 2;
}