Getting new tunes onto MyBooklive

Hi, I have copied my itunes media folder over to my NAS, which seems to be the only way I can get it done, which works a treat.  The only issue is that when I update my itunes with new albums I can’t get them to copy over to the NAS.  I have tried dragging and dropping between finder windows, and can’t think of another way of doing it?  ANy suggestions.  What I have done in the past is wait till I have built up a large body of uncopied albums then scrubbed the NAS and reimported the itunes media folder.  Ta in advance for any help

Click on the link below and see the option to “consolidate your iTunes library”.