iPod I think I messed up, please help

I was trying to move my itunes library to an external hard drive and was having problems. I had all the files on the hard drive but something wasnt working right so i imported them all back into itunes and deleted them off of the hard drive so I could try the process over again. But, I forgot to change the media file to something besides my external hard drive before I did this. Have I deleted all of my files? When I click on one to try and play it says cannot find file and they all have exclamation points beside them. I still have everything on my iphone, so, can i restore all of my files from my phone? Any help is appreciated.

It's a pc. I can use the search and it finds the file in some random place and it doesn't have a normal file name. It's under system 32 or some random thing like that. But it doesn't appear to be able to play the file

So if I did delete them is there any way to restore them onto iTunes off of my phone?