They never released music, just metadata. It doesnt matter. This injunction is just legal posturing. They have no jurisdiction to tell foreign domain registrars to do anything. It takes an actual cop walking in on a data center to finally seize a site (surrender hard drives, reroute domains, etc.) If the server is in another country, it takes years to go through the red tape. If the country is not collaborative, it will never happen, specially since piracy is seen as a very low priority issue in the grand scheme of cyber crime.