I Love IPB one thing that would make it 3 times betetr then what it is now is a Media Sharing pluggin.
One way to do this would be to take your IP Gallery and make it into something liek this: http://www.vbtube.com/ or http://www.mediascripts.com/social_features.html
you have most of what they offer but their playe ris 3 times better then what yours is