It seems like the music industry and content providers have tried to stop almost every advance in media reproduction and/or play devices over the years (records, radio, cassettes, VCRs, to name a few). Digital music is just the latest in their quest. The funny thing is almost all the things that they are originally against wind up making them more money in the long run.
If they had their way they would charge us a royalty for singing one of their copyrighted songs in the shower.