The software doesn't support the Mac OSX operating system. You will have to use an emulator to get the application running in OSX. Luckily, there are applications you can use for this operation.
For example, Wine Bottler is the right example for this procedure. Download it on your Mac and install it, then follow its instructions to load the CubeTheSphere. The CubeTheSphere is available for download from the application's page at Software Informer.