Exactly. CDs can contain basically any audio you'd like... which is part of the cause of loudness wars, after all - you can put things on a CD that just wouldn'

Exactly. CDs can contain basically any audio you'd like... which is part of the cause of loudness wars, after all - you can put things on a CD that just wouldn't work on vinyl. You can even add vinyl effects (warmness/clicks) in post-processing. I have a few songs in my library that really do sound like you're playing an LP, even though they're completely synthetic. In the ripping community, there are some well-known albums that were mastered differently for LPs and are considered superior to their digital mastering. And so there are folks who spend $$$ on setups to play back the LP, record it, and then postprocess it to remove clicks. You end up with a digital audio file that has the better mastering. You could put that same file on a CD, after all.