Are they on the same account signed in? Do you have an apple device that also sees the same list?
My iTunes is on 2 PC's, & 4 iPods - No other devices. To my knowledge no login is necessary on any of the iPods. Both PC's are on the same account. Llogin and password are the same on both PC's but I don't have to login every time. Thank you.
The 2 PC;s are on the same account with the same login. The iPods don't have a sign-in