-Your use of the Services and Content must follow the rules set forth in this section (“Usage Rules”). Any other use of the Services and Content is a material breach of this Agreement. Apple may monitor your use of the Services and Content to ensure that you are following these Usage Rules.
-You may use the Services and Content only for personal, noncommercial purposes (except as set forth in the App Store Content section below).
-Apple’s delivery of Services or Content does not transfer any commercial or promotional use rights to you, and does not constitute a grant or waiver of any rights of the copyright owners.
-You can use Content from up to five different Apple IDs on each device.
Find more via ( https://www.apple.com/legal/internet-services/itunes/ )