No sound Piano Hat ( fixed)

Hello and Thanks it is now working I went to Pimoroni/pianohat$ sudo python
simple-piano.py and it worked like a dream so why don't this command work for me sudo python Pimoroni/pianohat/simple-piano.py l mean it works the keys light up as you touch them but no sound at all but now using the way you have pointed out everything works great it took 2 minutes to put in on a Raspberry Pi half an hour to update/upgrade and load Pimoroni's Script and 8 hours to get it run ??? thanks