That's is a cool resource Jorge. I just might start sharing some of my stuff there.
Thanks.

Jorge De La Garza wrote:
> Good Morning!
>
> I'm including the link to the VoiceThread recap I created for my Class: http://voicethread.com/share/264701/
>
> The Topics cover:
>
> Voicethread
> Digital Storyboarding
> Photostory 3
> Intructional Videos
> Instructional Games
>
> It would be awesome having a guest speak about how they have used any of the topics. Just leave a comment on your area of expertise.
>
> Collaboration Rocks!
>
> Let me know if I can help in any way for your collaboration efforts!
>
> - Jorge

I know that Joomla offers some of these capabilities...
You should check it out. Specifically with Community Builder installed.
But you can also find some cheap scripts on ebay.

Vahid Masrour wrote:
> I am trying to create a web2.0 gallery website that would allow the users to upload their musical and visual creations, along with some comments and ranking system.
>
> An engine for this type of website must exist somewhere... can you help me find it?