[urumita]

Instead of highlighting "select unused" he accidentally Highlighted "Selected All" and proceeded to delete a whole song.
There was no recording done on the disc after this mistake.
I know the files are still there, and if found can be relinked by their unique IDs. As I've never dealt with this before. What is the best procedure? Can I do it without a program like disc warrior?
Even if I have disc Warrior, how would I go about recovering the files by 6:00PM tomorrow?
The disc is a SanMP volume and I'm leaving run until I get this song back.
Would there be any particular problems any one knows about using a recovery program on a SanMP volume?
I guess I'll be backing up the rest of this disc!
Thanks in advance