It's mentioned in the documentation under Publishing.
Basically, in your project folder should be an EXE that has your project's name.
You need that, and you need everything in the Media folder that's in your app project folder, except for the "SourceCode.byc" file. That's your plain text source code, so you might not want to distribute that.
Zip the exe and the media folder up and you can post it for use by anyone running Windows.