Yes, it is covered by copyright. If you are looking for the file for your car, you can contact DHP and they will send you one. But the Tuner's Guide gives you basically the same setup as the 1.5 file.
And also, the 1.5 is not an end all tuning file. I chose even not to run this file at all. I started tuning from stock. I tried the 1.5 file on my car and my wifes, and both had loads of KR. So I just tuned in the correct manner and have 10x a better tune than the 1.5 would give me. They may be a good place to start for some people, but they are nothing near a good tune.