CrossRef metadata

[Georgios Michalogiorgakis]

Hello to all, 

  I have been using Referencer for some time, and it's a great program to 
handle a huge number of pdf's. 

Now that the crossref.org site asks for user registration Referencer cannot 
get the metadata of papers.  Unfortunately adding the username and password 
of an openURL account in the Edit-->Preferences-->Metadata Lookup URL using 
pid=username:password or req_dat=username:password does not work.  

Is there a known workaround for this, or an alternative site as we wait for 
the next release of Referencer?

Thanks,
Giorgos