What I do to "legally" buy music is go to rummage sales and buy out all the CDs and cassette tapes they have of interest, then I download them over the net because I now legally own the music and have the right to download a legal backup copy in the event that the said CD or cassette doesn't work. Which is why I always, and I do say always pick up random CDs on the ground if I encounter them and can read the label.