It's very easy, just drag & drop your files into it or upload them directly from FTP/SFTP client (it does not work with SFM).
You can easily encrypt any file of arbitrary size without having an account at Ioncube website - you don't need their API keys anymore! Nothing in particular that I dislike about this software but there are some things which could be improved like adding more languages support for example Turkish language etc., faster encoding speed would also help because sometimes my server gets slow when using other encoders so if possible try another one as well before buying :) Easy way how we protect our codes by making sure only people who have access will get those code while keeping others away form knowing what they're doing inside encrypted part. With encryption i make certain no-one knows exactly whats going behind closed doors even though its clear enough everyone sees everything else including password protected data stored here :D We use php.