Re: Getting Started in 2019
My suggestion is centos 6.10 for the easiest install. You can download it. All versions of centos are available on their website going back to 2.0.
https://wiki.centos.org/Download It shows 8, 7, and 6. I think 6.x, 7.0 and 7.1 all work, I am not sure about editions further out work OTB or not. It has been a while so I am not 100% sure.
I think as long as you can install QT 3 and required packages associated with it, it will work.
ShowEQ also works on raspberry pi. There is a thread on that if you want to see how to do it.
http://centos.mirror.constant.com/