How do I share audio files with friends but not allowing them to download it?

I want to be able to share some audio files with some friends but only allowing them to listen, not download. It is important that only certain people I allow can listen to these audio files, not just anyone.
Asked Oct 08, 2014

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.