I successfully downloaded BlueStacks on my computer; why can't I find it anywhere?

I saw that you would be able to access Google Play Apps, if you downloaded Bluestacks on your MacBook Air. There was a music app on there that I wanted to try using, so I was able to successfully download Bluestacks. However, after downloading it and successfully installing the app, I didn't put the Bluestacks icon in my applications folder and I couldn't find it anywhere. I could find the installer.dmg and I tried to install it again, so I could add it as an icon, but now apparently there isn't enough space to download it, whereas there was when I had downloaded the app mere seconds ago. I believe this means that Bluestacks is still on my computer, but how can I find it? And if I can't find it, why am I not able to download it again?