registered easily with the key provided in the instructions on the download page but the program is useless, there is freeware much better than this for finding duplicate titles and files that may not be the same size but have the same content. This program is not worth the effort of downloading or paying for, as there are far too many freeware programs readily available that allow for more granular searches and matches. All this did was find the exact same titles and byte sizes, which any number of free programs can do. This also wants to sync your Itunes and Media Player files, something that is unnecessary and is enabled by default.