Hey - what problem are you having? Once you download the rar, you'll need to extract it, and depending on platform it should be a simple matter of finding the application file and running it (TalesOfAndrogyny.exe on windows).
I maybe having this problem too. I'm trying both the 32 and 64 .rar for windows, but it's making me open it in an app because I'm using windows 10. What do?