Ipod Not Recognizing Existing Apple ID

Hi all,

I am having a problem synching my new (refurbished) ipod 5th generation ipod with my current and active Apple ID on my desktop computer (windows). I had an old apple ID on the current computer that I am using prior to getting an iphone and creating a new Apple ID. I have several hundred songs associated with my active and current Apple ID, and only 3 on my old ID. When I log into Itunes on my computer under my current username, I can view my entire library of active songs, but when I go to sync my new Ipod it does not recognize me being logged in as the current account and wants to sync with my old ID that only has 3 songs.

Me logged in on my computer under current apple ID (notice whole library)

Me logged in under current Apple ID, with ipod plugged in and ipod only recognizing 3 songs and not entire libray.