Help me finish up my WPF app

So I have a WPF application and I had someone else working on it, but they have consistently been missing deadlines and this is too important.

It is an application linked to a SQL database.

All I need at this point is a few bugs figured out, user registration/login added and a way to play music.
For a professional, this should probably not take too long since most of it is in place already.

Deadline is Saturday, but sooner would be great.

We can discuss the budget, all I care about is that this is done.

Thanks,
Michelle