Listen up, Nightflier: A true universal player

[Sir Terrence the Terrible]

Still would love to find an actual sound file of jitter. I've searched quite a few sites since yesterday and came up empty.

Files with jitter are really hard to find online. It a demo best done in person, and in a controlled environment. A computer has many areas of contamination that can make demonstrating it pretty difficult, such as a jittery sound card and drive noise.

Interestingly, there's a lot of debate about jitter's audibility. Of course, many of the people who say that jitter is audible are from "the industry." Furthermore, the definition of what it actually sounds like is all over the map. So at the risk of being lambasted about this, I'll ask the white elephant question again:

What does jitter sound like to you?

The people who work in the "industry" have better access to environments that make jitter easier to hear. (i.e. a quiet studio acoustically controlled with very good electronics). They can directly compare a signal with jitter, and without it in some cases in real time. The definition is not really all over the map, the link you provided did an excellent job of telling what it sounds like. Some folks are just not good at communicating what they hear, but they still can hear it. My description basically matches how the link you provided describes it.

...And if someone has a spare minute, upload a recording of a jittered file, because the more I read about it, the more confusing this is becoming.

I think you are confused because you have a limited understanding of digital audio as a whole. The more you understand PCM audio, the easier it is to understand jitter. It also makes it easier for you to know what to listen for when jitter is present in the signal. Even if I presented you with a jittery file, you may not be able to hear it because you do not know what to listen for, or may not have the acoustical environment to flesh it out.