For a single sided record the blank side has to be entered, so put "no Artist" or none listed..and once its up on the site a moderator can go in and take it away completely.
It'll finally look like this
Crates Are For Digging Member since Aug 2012 25322 Points Moderator
All you need to do is BLANK in capital letters in the title field and this shows up in the lists the Mods check no need to change Artist that is copied from A side. Otherwise you set up an artist No Artist which needs to be deleted.