After changing computer name, I have duplicates of every file, please help!

Recently, I had decided to change my MacBook Pro name. After reading the warning, I understood that everything would turn into defualt settings and I would not loose any other information. However, in result, after completing a restart; my computer made duplicates of music and pictures. To add on to this, the name change deleted my playlist, which I have no problems with, and made about 3 duplicates of every song in my library which consisted of about 28 gigs of music. Is there any way to fix my issue? Btw...all of the files are there, it is just that there are TONS of duplicate files which need to be deleted because of this computer name change. Thank you for helping out, anything would be appreciated.