The Articular products (Engage, Presenter, Quiz Maker, and Video Encoder) seem focused towards creating Flash content.
Moodle is more of a CMS. CMS's are focused more on "managing" content. Moodle is one of a number of specialized CMS's which fit into the LMS niche.
Depending upon your requirements, a CMS/LMS is not necessary. There are many ways to present Flash content.