Related: Does anyone know of any electromechanically latching switches (That is, press them and they stay latched until they are electronically released) to reproduce the feel of the mechanical buttons?
The progress bar is fairly easy to reproduce with something like this: sparkfun.com/products/retir… (Unfortunately, retired, but I'm sure others are available)
Thinking about it, you could do it with a coil in-line with a momentary switch, and a magnet on the button. Push button, circuit is completed and coil energizes, keeping switch down until MCU momentarily interrupts the power or ground, at which point key releases. Like a toaster.