08edgeSyncIssue

Ok, I am very new to SYNC, and my problem is that i updated my ipod with new songs, and the sync will not recognize the new ones, just the original ones. I tried a default and master reset on the sync, and nothing seems to work. I also did the SYNC my Itunes thing, and nothing. Anyone have any suggestions? Im fairly savvy with electronics, and this has me stumped.