CMS requirements!

Ok - most likely we need a custom CMS made for us. But as a last resort we wanted to list our requirements here, in case anyone knows of a open source CMS that fulfills these requirements!

The CMS system should be based on PHP/Mysql/Apache or another system like ASPX/MSSQL/IIS..we're open for suggestions.

Our requirements listed below are ranked by importance:

Very Important:

1. Support for video streaming (Flash preferred! ...or Windows Media streaming)
2. Integration with vBulletin (show latest threads, members etc..)
3. Articles written by staff for members / article directory
4. Search function in articles
5. Advanced design and customization possibilities

Important:

1. Word index / dictionary for people to look up words & explanations
2. Blog integration for members
3. Online shop ( average shop for members )
4. "Latest news" section

Somewhat Important:

1. Hide parts of the site for members only
2. Polls/Vote systems

There you have it I know there are a lot of components to consider, but as you can tell our current project is huge. We're probably best off with a fully customized CMS, but if any of you know of a great open source CMS that covers our requirements, please let us know.

Thanks to you all

I am not aware of any CMS that does all that but we could build one for you. It may cost a few thousand dollars though. If you are willing to spend money for this please send me a private message.