Does this mean that for example the audio downloads from Apple's 
online music store are really not that secure? Since the user viewing the
content (the digital audio files) theoretically has access to the decryption
scheme (within iTunes)


> Unfortunately, it sounds like you want to protect content from being
> stolen by the user from within an app that displays that content to the
> user.  I believe there is no way you will ever achieve this.  If the player
> app can display the content, then the user viewing the content
> has access to the decryption scheme...that will always be a security hole.
>
> Data can only be secured en route to its intended audience.  If you can
> give the audience a public key, then you can prevent others from
> intercepting it, but you won't be able to stop them from stealing that data.
> You can make it difficult to access, but if the data were desirable
> enough, it could be accessed without brute force.
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