Logged in Freegal users generally see URLs like https://bostonpl.freegalmusic.com/album/4050215697904/2 where bostonpl is the subdomain for the library they access Freegal with. I think it would make sense to strip the subdomain to https://freegalmusic.com/album/4050215697904/2 which isn't useful when logged in to Freegal, but also isn't specific to any one library.