I think MP3 is a good, fast and moneyless way to hear the music straightly from internet.
Some kind of music, like new age, suffer of low popularity because there aren't enough media to develop it!
Thanks to MP3, I have discovered many good artists, so, first I hear the MP3, then I go to the shop and buy the CD.
This is only a little example as the MP3 give a chance to the music companies to sell more CDS.
Sony, Columbia, Dreyfus .. pleazzee don't bother MP3 again and stop to cry, there is no damage to your pockets