Amazon zeigt mal wieder allen, wie's geht:

5.2.Our Right to Access Your Files. You give us the right to access, retain, use and disclose your account information and Your Files: to provide you with technical support and address technical issues; to investigate compliance with the terms of this Agreement, enforce the terms of this Agreement and protect the Service and its users from fraud or security threats; or as we determine is necessary to provide the Service or comply with applicable law.

5.3.Security. We do not guarantee that Your Files will not be subject to misappropriation, loss or damage and we will not be liable if they are. You're responsible for maintaining appropriate security, protection and backup of Your Files.

Auch technisch und rechtlich hat die Kombination von Cloud Drive und Cloud Player einiges zu bieten: Ein Upload ist nur über den Browser möglich, und das unkontrollierte Streaming kommt für die schwer geprüfte Musikindustrie, sagen wir mal: unerwartet.