The administrators are legally obliged to pay you for all services given from the moment they took control of the company.
They are not obliged to (read: will not) pay you any wages earned prior to the moment the company entered administration.
So, basically, this month's paycheck will only count hours worked starting from today. I hope you have a little bit saved up for emergencies. I was in the same boat as you a few years ago with Music Zone.
still leaving this here though.