------- would itunes delete my HARD DRIVE instead of its library? ----------
you said it just deleted the itunes library of songs? not all of your hard drive?
you also said that you took the songs out of the trash, where are they now?
if you know where they are, open iTunes, hold the option key down, just as it is opening, you can choose to create a new library there..do it, name it itunes2 if you wish.. so as an experiment, (take a song from where you have one, and put it on the desktop instead) then simply drag that song that you recovered to this new library (itunes, and let go).... see how that works.
if you want to go back to the old library, hold down the option key as you start up itunes, and choose it. (it hasn't gone away)...
report back, you have to let us know exactly what shape you are in (where the songs are now) if anywhere, what is the state of your harddrive? that doesn't sound right what you said, you wouldn't even be able to post if you wiped out your harddrive... be specific about what is working and what is not working, where things are that you know where they are...