iTunes music stuck in Trash...PLEASE HELP!!!

It's late. I opened up iTunes and everything I tried to play had an "!" next to it, saying iTunes could not locate the song. Since this happened to every song I tried to play, I just dragged the whole iTunes music folder from my hardrive to iTunes and it made doubles of everything. Since there was now almost 500GB of music in my iTunes app I did a "select all" and dragged everything to the trash thinking it would take everything out of iTunes (at this time I had doubles of every song) and I could just re-drop the folder in from my hardrive...big mistake...now I have 250GB of music in the trash, no music on my hardrive, and finder crashes everytime I try to open trash to get the music out...HELP!!!!