WARNING: Provided binaries are very out of date. If you want the latest changes you should compile from source. New binary releases are coming after the first stable version is complete.
Banshee is still in development and does not yet come with a proper installer. You will need to extract the downloaded files manually. The platform support is currently limited to Windows only, but more platforms are coming in near future.
Before running the editor make sure to install VS2015 redistributables:
Latest version:
Older versions: