Android “Resources” Security

Question

I am building an Android app in which client is selling some mp3 files. Now my question is, when I copy these files in the resources folder, will they will be exposed when s

Answer 1

Now my question is, when I copy these files in the resources folder, will they will be exposed when someone will explore the file system?

Yes.

So if this is possible, how I can make sure my resources are secure?

You can't.

What you're asking for would only be possible on a trusted computing (a.k.a. treacherous computing) platform, which Android is not.