Back in June, 2022 I thought about creating a mod that allows to change music discs record, with dedicated Java Swing (:D) app and auto conversion to .ogg audio.
This mod was actually client-side because it used resource pack to change audio. So you can have custom audio while others still listen to classic songs or set their custom ones :)
Sadly, mod builds didn't work properly, so I turned the mod to an external application - it's called CMDR (Custom Music Discs Records, what a name).
Now I don't have much time to work on it, so I have no promise I will finish it soon.

So... your mod is basically what I wanted to made, except that you did it MUCH better.
The only downside I see is Simple Voice Chat requirement because I mostly play with my friends on Discord, making SVC obselete to us.
But still it's a great relief for me that someone else came up with this idea and made really cool implementation, without any tricks or pitfalls for users.
From now on I can sleep peacefully knowing that someone made my 2-year dream come true, thank you ❤

Only now I found out that this mod also was made in June, 2022
I have no idea why I didn't find it before

❤ Thank you!
Its awesome seeing people having fun with the mod :)