Best solution for offering subscription to VOD

HI all,

I want to offer my clients an online service that allows them to create their own subscription based access to their video content. They currently distribute their video content via DVD or free downloads as part of promoting themselves.

I want to offer them a way to create online sales and gain access to an international market for their services... (and no.. this isn't porn!).

Specifically what I am looking for is using the private option in YouTube to then embed the videos so that paid customers of theirs in my WPMU can access and watch the videos on demand.

I am also wondering how to present a page that catalogues the videos they have available to watch. I suspect posts or pages would be fine for embedding each specific video.

Any suggestions?