Okay, I've now tried the game.
Nice idea and the audio component worked fine, even if sapi didn't read the menus once they were open.
However, the visual element did appear to have a few problems, (I can see enough to play pong). when I turned the video off and played via sound things were fine, however the video didn't particularly work smoothly. The animations of the moving pattern of the ball were out of sink with where the ball was, indeed I once heard the ball hit the floor even as the graphic of it was still in the middle of the screen. I wonder if this is because the graphics don't seem to actually move the ball, but just redraw it in different positions?
then, the paddle was a very dark blue, which was actually quite hard to see, and it's movement was also very choppy in terms of the redrawing and keeping in sink with it's audio position.
While I can certainly see the point of this game and think it's a great idea, I do wonder if as well as adding some more features, you might need to consult someone about the graphical portion. Pong obviously doesn't have to have major complex 3D graphics of doom, ---- but still if it is to be visually playable the graphics do need to work as well as the audio.
I hope further developement goes well.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)