CDROM Versus Website Software
There is no difference in the content of the software on your CDROM and that on the FTA website, so they are the same except...
Software on the website is updated whenever there is a new release, so it is probably newer.
Software on the website and the CDROM are organized in the same set of folders. Note that you do not use all folders in any one installation, as explained in the installation instructions, so you would not need to download the entire folder set.
Software on the website is packaged in zip files for easy downloading. This is not necessary on the CDROM, so there is an extra step of extracting the zip files when you use downloaded software. This step is explained in the instructions.