I would like to "test this software for unlimited time", if you know what I mean. How do I install it in Ubuntu? I have downloaded the package and tried to run

I would like to "test this software for unlimited time", if you know what I mean. How do I install it in Ubuntu? I have downloaded the package and tried to run it through the usual software installer, but it didn't work. Then I went to their FAQ page but couldn't find any clues about it.