So that "multimedia tween program involving conversation, music, video, print, and games" idea actually has a name ... "TRANSLITERACY" programming. It is reminiscent of the "multi-genre" English education model and Gardner's theory of multiple intelligences.
Here are some resources:
Transliteracy Interest Group (LITA - Library & Information Technology Association).
Introducing Transliteracy: What Does It Mean to Academic Libraries? by Tom Ipri
Andretta, S. Transliteracy: take a walk on the wild side, 2009. In World Library and Information Congress: 75th IFLA General Conference and Assembly,Milan, Italy,23-27 August 2009.IFLA. (Published) [Conference Paper].
Digital storytelling: creator's guide to interactive entertainment By Carolyn Handler Miller
transliteracy.com or http://nlabnetworks.typepad.com/transliteracy/