So, most of you probably don't know what HTMLPlayer is.
Basically, it's a web-based, open-source, and completely client-side music player with a bunch of features and useful tools.
I had created it last year in a single, messy index.html file, and have been working on remaking and improving it since then.
I am actually almost done with it, but it's still in public beta:

Check the original out here: https://htmltoolkit.github.io/HTMLPlayer
And the public beta here:
https://htmltoolkit.github.io/HTMLPlayerBeta