I'm new to Macs, and I just downloaded Zipeg, which has worked for me when opening zip files. However, just seconds ago, I tried to open a program that I had just downloaded, but I don't know why it's not working. There's so many files that lead to so many more, but I just want to open the application. I extracted it all, but how do I open the program that is amongst many other files in Zipeg? Or maybe another file opener?