Just a reminder to you all. Youtube has started accepting album and concert uploads since 2012 ! You will find tons of music especially old difficult to get albums . You can download it using a Firefox plug in as MP4 files. Sound ranges from very good to quite acceptable. Main thing is you can get albums you haven't seen in years ! It's great being able to listen to them now.
I don't know how all this is allowed, but sometimes albums are removed. So download what you want when you see it. Can never say how long it might be there. But there is TONS of music there right now.