[Playlist] How to avoid music download?

[José Renato]

Dear All,

Thanks for all those post replies! I got the idea. Actually my problem 
is not what the user will do with the songs. Because in our system users 
own them! My idea is to prevent a sort of implementation where the songs 
are in a easy repository to be downloaded for any person. These files 
will be available for music owners to be downloaded if they want so. But 
imagine:

1) User log in the system;
2) He builds a list of payed songs;
3) And then he copies the file links for direct download (for not 
registered users);

Here is the point! I know that if users can download their songs, what 
could stop them to send files in email for exemple?! Nothing. But we 
want to develop a system whose files can not be shared by it. So we are 
preventing legal problems.

Thanks a lot again,
José Renato.