Ive managed to tweak the example more or less to the requirement however (in the code below)

On Sun, Jul 17, 2011 at 9:01 PM, Rustom Mody <rustompmody@gmail.com> wrote:

fun void keyboardListener()
{
    KBHit hi;
    int c;
    while(true)
    {
        hi => now;
        while(hi.more())
        {
            //if(msg.isButtonDown())
            hi.getchar() => c;
            {
                if(c == 68) // d
                    2 *=> Voice.multiplier;
                else if(c == 72) // h
                    2 /=> Voice.multiplier;
                else if(c == 73) // i
                    Voice.decreaseSpread();
                else if(c == 79) // o
                    Voice.increaseSpread();
            }
        }
    }
}