I meant to clear some internal hard drive space by moving all my music to an external hard drive, but rather than going through iTunes and resetting the folder through the settings, I moved all my music to the portable hard drive first and deleted it out of the iTunes music folder. Now, even if I reset the path of the music, iTunes is empty. I tried putting the music back into the iTunes folder and reseting the path, but iTunes still comes up blank. How do I get my music back into iTunes?