We don't ship a CD because Digital Pipe Fitter is not a static product and is having features and capabilities added. Your purchased license applies to all future upgrades which are freely downloadable from the website. So, any CD we could send would be outdated in a few months anyway.
If you need to reinstall Digital Pipe Fitter, just download the most recent version from /download I want to run Digital Pipe Fitter on several computers but only one PC is connected to the printer. The licensing of Digital Pipe Fitter is a bit different from most commercial software. The program itself, that you can freely download from the website is basically freeware. It can be legally copied, shared, given away.