CRP used the MIT license. This basically means you an do whatever you want to with it, but you shouldn't blame me for any problems.
Most of the development work for CRP was done by Dirk Grunwald (firstname.lastname@example.org). If you use CRP and are happy with it, you might send him a tip through PayPal or buy him dinner sometime. Other conference review packages have professional services, and these are used (and paid for) by a number of conferences. If you want that kind of service, it can be arranged for a fairly reasonable fee. Even if you don't want that kind of service, tipping provides a way for Dirk to justify the time he spends on this endeavor. It certainly mollifies the wife if I can tell her it's paying for dinner.