I would like to be able to paste those instead if just the MBID (because I right click copy URL on MB site):

• http://musicbrainz.org/recording/641e5a82-6b40-4a2a-a4fa-e2344c07a801
• https://musicbrainz.org/recording/641e5a82-6b40-4a2a-a4fa-e2344c07a801
• https://beta.musicbrainz.org/recording/641e5a82-6b40-4a2a-a4fa-e2344c07a801
• http://toto.mbsandbox.org/recording/641e5a82-6b40-4a2a-a4fa-e2344c07a801

Or anything that matches the following regular expression, maybe:

/.*([0-9a-f]{8}-?[0-9a-f]{4}-?[0-9a-f]{4}-?[0-9a-f]{4}-?[0-9a-f]{12})$/i

And as soon as somthing matches, it could add it, without having to click that Add recording button.