I need help with my iPod?

I asked a question before about Transferring my iPod purchases, and that has been resolved. I was able to transfer them perfectly fine, but then when I put them on my iPod Nano 8GB, some of the album artwork was mixed up, but only for certain artists/songs. Example: Hannah Montana songs were replaced with Flo Rida's artwork, because I have his song: Right Round. Plus, songs I have from the Twilight movie (I bought the whole album) were replaced with a High School Musical 3 artwork from a song I have called 'The Boys are Back.' Anyone know what I can do or how I can get help from Apple themselves? Any help would be appreciated ASAP!