the link is generated in the webassist/templates/Blank.php file
the link:
href="mailto:http://www.affinitysounds.com/user-confirm.php?1d=2&randomString=u8b0k3?email=john@phonejockeyrecords.com"
has 2 problems
1) there should not be a mailto: statement
2) the first url variable, you have named 1d instead of id
it should be:
href="http://www.affinitysounds.com/user-confirm.php?id=2&randomString=u8b0k3?email=john@phonejockeyrecords.com"