The API wrapper project is for use with 1.8 CMS’s only.
We’d highly recommend upgrading to 1.8 release if you want to use the API. The API in 1.7 is only beta quality and supports a very limited set of functionality.
clientId and clientSecret was used to connect to the API in 1.7, although you had to do a manual oauth connection, this is explained here: http://xibo.org.uk/manual-tuttle/en/api_oauth.html & guide: Scripting Content Management - A Brief tour of the API (with example code)