How to transfer music to a new iTunes account?

Hi! So my sister and I share an iTunes account, and we just recently got our own iPads. It's a new experience for us and we enjoy having it, but sharing an iTunes account is becoming very confusing. I know how to set up a new account, but I want to transfer all of the songs (300+) and apps we bought to the new one. Is this possible, and if so can you tell me how? I have an old iPod Classic with most of the songs, an iPhone, and the iPad and my sister has the 1st iPod Touch and the iPad if that helps. Please answer my question!

You can download 4easysoft iPad Manager to have a try. It supports all Apple devices, and can transfer files from iPad to computer or itunes.