I have a project in CS6 that got too big, so I started a new project to continue with, but would like to transfer over some of my bins like my music and sound FX bins (It'll take a while to sort through my whole library to locate each one again) so is there a way to transfer a bin over to my new project?
Copy project and throw away you dont want or...
...If you go to the media browser and navigate to the old project you will find all your assets/bins which you can import into the new one.
That's a new feature for Premiere Pro CC. Using CS6, one would have to import the entire project and delete anything unwanted.