"Apple embeds your account information in all songs sold on the store, not just DRM-free songs," says Ars Technica. "Previously it wasn't much of a big deal, since no one could imagine users sharing encrypted, DRMed content. But now that DRM-free music from Apple is on the loose, the hidden data is more significant since it could theoretically be used to trace shared tunes back to the original owner. It must also be kept in mind that this kind of information could be spoofed."
The speculation is that Apple and/or the record labels might want to watch whether buyers share DRM-free music with close friends....
TUAW's Erica Sadun explains how to find your name in the file using the Unix grep command.
