I have imported a large number of CDs into my iMac, and I realized recently if someone managed to copy the MP3s off of my computer with a simple USB drive, they could steal my entire library! Is there a way to encode my ripped tracks with DRM to force iTunes to check if the computer is authorized to play them? I think I remember there was an early version of iTunes that allowed you to encrypt your own tracks with FairPlay DRM. Any thoughts?