The software I am using is SK Jukebox. I love how it works with a touch screen. As for the paint I started out with Satin Black enamel that was left over from another cab, but I ended up not having enough, so I ended up using Semi-Gloss black Latex for the last 3 coats.
I kinda had an idea of what I wanted it to look like in my head and just started cutting. I almost didn't have any room to secure the monitor, but it worked out in the end.
When I first mentioned building a Jukebox, my wife wasn't too hip on the idea, but after I finished it she can't stop using it.