CD's and Vinyl. I can't vouch 100% for the legality of it, but once I buy a CD I listen to it, then I rip it, and keep the CD itself in it's case so it doesn't get scratched to hell and back. Then I burn a copy to actually listen to. I've lost enough CD's to shoddy cases that scratched them, people borrowing them and returning them in a shit state, and general laziness on putting them down on the shelf or the seat thinking they'll be ok. I still try to buy the CD's if I can, at least give something back to the band if you like them. Although I do have this to say to the pirate argument: The first time I listened to a Tom Waits album, it was Bone Machine and I got it off a torrent. I have since bought every studio album he's ever released, and in at least four cases bought an album again on vinyl. So it that sense, it was kind of like a demo. If you make something awesome that people will love, they'll gladly buy it even if they can hear it for free.