If you read about the Redigi decision, you know that a court has ruled against COPY AND DELETE. Yes, you can't buy an mp3, make a copy to sell (or give away under the same logic) and then delete your copy. You CAN resell your whole hard drive with the mp3 on it, so there is still First Sale, according to the judge.
If this makes you mad and you want to speak out, particularly since Congressional discussion on the NEXT GREAT COPYRIGHT ACT are starting to commence, then Sign the Petition saying we need DIGITAL FIRST SALE. Also REMIX RIGHTS.
WHITE HOUSE PETITION: