How to make the player on the volumio page

When you go to volumio.org/ there is a box that has a screen and a volume knob. This is exactly what I want to build.
I was wondering if there was a guide or pointers how to make such a item.
I have yet to start the project, but have got lost in a world of googling and looking up stuff on you tube and this site.

I want to know what is the screen that is used?
How to wire it to the board so it displays what is playing ?
Where to wire the volume knob to the screen?

Without having read the whole thread, would this be of any help?

gpio-pins-control-volume-t2219-20.html

Plus:
volumio.org/raspberry-pi-displa … ic-player/