Buzzers you have a point, all encryption is eventually broken, so a UUID representing each person could take its place in order to keep the victims contact information private. However this would require a database to be holding that data and that sounds less practical (who wants to go through all that work for my email address anyway).
I believe this to be a reasonable middle ground. The encrypted data does not prevent the song from being played just as a VIN on a car does not prevent a car from being driven by a thief. What it does is allows someone suspected of being a thief to be convicted of the crime.
imagine iTunes asking you to refresh the DRM on all your music in your library, even music not previously DRM'ed. 10 out of 10 people would say NO!!
imagine now if iTunes offered to remove the DRM from your music and replace it with this method... 10 out of 10 people would say yes.
Even if/when the encryption is broken, iTunes could issue a new security key and apply it to your music.
It seems like you misrepresented Jonathan's DRM solution, saying others might be able to read an individual's personal data (name, address, etc) inserted in purchased MP3 files. Johnathan clearly said the info would be ENCODED, so only the authorizing company could read an individual's ID number; the companies private/secured database would cross-reference the ID# to private information such as name, address, phone, EMAIL, etc.
And if Molly is still pouting, the encoded ID could easily be watermarked within the actual MP3 data, unless y'all have a better mousetrap than Jonathan's elegant solution.
This is so obvious. Cars have VIN numbers. Guns have the same thing, even little Bobby Jr scribbles his name in permanent marker on the inside of his backpack. Encode my name, address, phone number, and e- mail permanently to my digital data and make it so it can't be removed, and you will solve the problem right there. Add the tools to scale down a video, and it works for your mobile devices in that market as well. People take too many stupid pills these days...gosh.