It was pretty funny yelling at my pc to get this marble to move around. The program worked suprisingly well, though there is around 1 second delay. I also couldn't progress through the part pictured below. The bottom speaker activated, but the one on the side didn't. So, it was impossible to progress any further.
Viewing post in Wild Marble Beats jam comments
The side speaker is activated by controlling the marble that was on the right to hit the switch. Unfortunately, I found out that on machines that run the game on low FPS the marble on the right sometimes phases outside the slope. Will be fixed once uploads are unlocked though. Thank you for playing and I hope you liked the mechanic! :D