BP-Media by rtCamp takes all user uploads and places into the Media Library. The plugin is okay, but had some issues with our Theme. It’s free with premium modules available for video transcoding.
The plugin you want probably is BP-Gallery from Buddydev. This is NOT BP-Gallery plus from the wordpress.org site. BP-Gallery has a centralized gallery page that shows uploads from all accounts on one page you specify in the buddypress pages settings like you do activity/register/activate/etc.. It is a premium plugin that costs $30 to access, but of all the media plugins I’ve found it has caused the least number of headaches. The biggest problem I had was changing a few lines of a code to better match our theme, but it was fairly painless.
BP-media by the rtcamp folks are supposed to be including the ability to import from other galleries in an upcoming release. But it has it’s own quirks and issues as well. In fact we just went from trying to use BP-Media to buddydev’s bp-gallery.
