please can anyone help...... I just accidently deleted my entire music collection which took 3yrs. to compile...!!!!

( and 20 secs. to delete ) I deleted 'my music' from 'my documents' by mistake....
it wasn't in my recycle bin and system restore didn't help..
I think there is some sort of recovery software available, anyone know anything about it?
cheers and merry christmas to you all.............