That's why I enjoy making a playlist of a few thousand of my favorite songs and then letting them run through on 'shuffle' - that way I'll hear things I never would have gotten around to otherwise. Obviously I still won't be able to hear everything, but I like the randomness of it...
Vinyl, CD's and Digital Files Accumulated Over A Lifetime
...
I fully intend to listen to all of the music that I've purchased in my lifetime, and I am on schedule to do it by my 592nd birthday.