// This is a music player script. The sound files are named as numbers. It is intended to play from 1 to 13, then 1 to 13b, then 14 to 39. The problem: it keeps looping at 13b. What am I doing wrong?

integer playing;
integer current;
integer repeated;
integer ended;

default
{
    state_entry()
    {
        llSetSoundQueueing(FALSE); // just in case
        current = 0;
        repeated = FALSE;
        integer p = 39;
        llSay(0, "Preloading!");
        do
        {
            llPreloadSound((string)p);
        }
        while (--p > 0);
        llPreloadSound("13b");
        llSay(0, "Preloaded!");
    }

    touch_start(integer total_number)
    {
        if (playing == TRUE) return;
        playing = TRUE;
        current = 1;
        llSetTimerEvent(3.92);
    }

    timer()
    {
        if (ended)
        {
            current = 0;
            playing = FALSE;
            llSetTimerEvent(0.0);
        }
        else if (current > 0 && current < 13)
        {
            llPlaySound((string)current, 1.0);
            current +=1;
        }
        else if (current = 13)
        {
            if (!repeated)
            {
                llPlaySound("13", 1.0);
                repeated = TRUE;
                current = 1;
            }
            else if (repeated)
            {
                llPlaySound("13b", 1.0);
                current = 14;
                return;
            }
        }
        else if (current >= 14 && current < 39)
        {
            llPlaySound((string)current, 1.0);
            current +=1;
        }
        else if (current = 39)
            ended = TRUE;
            playing = FALSE;
            repeated = FALSE;
    }
}