For install one Media Library component two times to one site you need full rebuilt component.
You may install next Media Library component without rebuild - if you will install component to other site and on first site - only will create menu link to other component site, or create that link as Wrapper.
Fields management please check free version
also every Pro version have license: one copy to one site. If you wish install more copy - to more sites - you need buy more one component.
But any way you may full rebuild component self, because all ours components Open Source