URLCommons still worked last time I tried it.
I'm not sure if anyone knows but we've written a help page for it on
English Wikisource too:
http://en.wikisource.org/wiki/Help:URL2Commons
- Adam
On Tue, Oct 16, 2012 at 1:00 PM, <wikisource-l-request(a)lists.wikimedia.org>
wrote:
Not sure if it still works, but...
http://toolserver.org/~magnus/url2commons.php
Cheers,
Magnus