why two libraries on apple TV??

just setting up my new imac and have opted to locate my itunes libary on my also new "My Book Live", had a bit of trouble at the begining as the libary path was wrong however I then corrected it and everything appears to be saving in the my book file.

however ive just gone down stairs to my living room tv and looked at the music folder on Apple TV and for some starnge reason I have two very similar named libaries? (I did at one point decide to ammend the name of the itunes libary, so instaed of my whole name just the first name), BUT it appears i have two complete libaries as all the 12 CDs ive just spent an hour importing are in both libaries??

im puzzled why do i have two libaries and why as I just renamed the first one!

how do i locate and remove the unwanted libary?

thanks!