Here is a list of articles related to video streaming which you might find useful

• Logging Player Counts to Database
• Hello Wowza - Module Dev Tutorial
• Debugging your Wowza Module from Eclipse
• Comments on the Wowza Streaming Engine® Server Side API

Wrench Related Articles

• Simple pay-per-minute solution for Wowza
• Forbidding Concurrent Stream Playing
• Dynamic Pay-per-minute Balance Checking
• User Authentication for Wowza Streaming Engine®
• How does Wrench authentication and authorization work?
• Video Chat / Streaming-as-a-Service Website
• Stream Access Control
• Web Service Based Authentication / Authorization
• Step-by-Step Wrench Setup Guide