Apparently when you do a serious repair like a Repair install, it screws up your DRM all to [bleep].
There is a way to back it up beforehand, through media player. Wish Napster would have warned me about that.
Currently I'm waiting for a reply from Napster on how to resolve this.
I understand it's no fault of you own, but a warning for legal music downloaders in that Repair Install how-to thread might be a good idea.