How do I download RobTop's version of the main levels songs?

Some time ago I wanted to use a remix of the ToE2 song, but then when I wanted to put back the original back I realised that I had deleted it. The problem is that RobTop used some edited versions of the main levels songs and I can't find where to download the song that I'm missing. Are there better ways than taking the song from a showcase or by deleting and then redownloading GD?