Pressing SPACE would toggle Black Bars appearance. Don't worry, they are meant to work like Standard and Widescreen.
After a long time, here is another Volume Test, designed in a modern theme and partial-8-bit style. What I would consider hacking is showing the variables and/or setting the pen down. My previous one only had 0, 33, 6(6/7), 100 and mute. This one has 10 (11 for 0) different levels, and a better mute feature, and extra design in the back ground. Wow, I'm showing this like it was a new gaming console.