I want to create rich desktop content authoring tool in .net similar to articulate storyline
It will have feature like creating content by selecting templates, adding animation, picture , images, integrating/editing powepoint slides, integration of audio/video files, screen capture and editing functionality etc.
Technology - I am planning to use WPF to create this product.
Do I also need to use expression blend or visual studio would be suffice? If yes then expression blend is free with visual studio 2010 or I need to purchase it?