Copy English CD

My wife is not a native English speaker. Before coming to America she got this English language cd to help her learn. Now she wants to send a copy to help her sister back home learn. I did a search on Google and this turns out to be a very old CD from a company that no longer exists. So I tried to just make a copy to send to my sister in law but it didn’t work at all and I don’t know why. I do know that the way the program works, you install something to the hard drive but them you still need the cd in the drive to actually run the lessons. Maybe this arrangement had something to do with why the straight copy didn’t work? Any advice, hints, suggestions, or elucidating questions welcome. Thx.

If your wife can live without the CD it would be a whole lot easier to send the original to her sister.