Customize BigBlueButton Opensource project

Hi, BigBlueButton is an OpenSource project for education. Its similar to Webex, GoToMeeting etc. and I'd like to add some features to it. The project uses lots of languages: The client is Flash (AS3, MXML), everything to do with red5 is java, recording processing is ruby, bbb-web is java and javascript. You can read more about here: [login to view URL] I'm looking for someone to implement the following features: 1. During meetings, users can play presentations, images etc. but not video files - I'd like to support it. 2. A way, to backup files from a meeting, and later plug the backup into another (same/different) meeting. 3. The platform provide a recording feature, but the recording dose not record "screen-sharing" (+video files) - I'd like to support it. In addition When a recording ends/ready, call an API and report about it. Add start/stop recording buttons. 4. Upload and play content from AWS S3 I need you to be responsible for registering into BBB mailing list, reading documentations and asking the right questions! When the project is done - all changes must be submitted back to the community and ALL of them must be approve by the community! so spaghetti/messy code is not accepted! Any rejects must be fixed. Price: FIX 1000$ PER FEATURE. Agreement: no upfront, 50% per feature when its finished && QA by me, the remaining 50% is given when the code is accepted and approved by the BBB community. Due to bad experiences with freelancers, THIS PROJECT IS FOR the first feature only. the freelancer must provide me with optional services of developing the remaining features, again, at price of 1000$ per feature.