How many times do I need to buy it before I own it.
The music industry has made themselves a bit of a paradox on this issue. Half the time they're saying you don't own the physical media but have bought a license to use the content under terms they control. But if the media croaks, suddenly it's the media you own with no guarantee of usability, as you would expect if you had in fact purchased a license. I believe they've won in court on each of these positions (in different cases of course).