Gianluca, @Leowyatt88 has made a very easy-to-use, accessible stem separation tool for windows.
One uses CPU, another uses GPU so simply download the version you need.

https://www.dropbox.com/scl/fo/jnicbs8cjc8orukpe8vhv/AA2n8ya1sWTvldMvyslOk_0?rlkey=au1g8jwx30xub8n9b5uks8gv5&dl=0

Music separator

Shared with Dropbox

Dropbox
@FreakyFwoof Do you know the model behind these? Also lol, who actually makes rar files in 2026!
@x0 Thank you! That is exactly what I said. Rar? Really? Rar?
@FreakyFwoof I only ever see those on p2p sites these days and that's due to old scene convention with multipart archives. But being able to create rar files means you have winrar, cursed software that is, installed. If it's too big for a zip most things handle zip64 extensions to make huge zips, and 7z is, at this point, the best archive format I've heard of. Rar might behave slightly better with lots of wav files though.
@FreakyFwoof Oh this is legitimately cool! It's got a ton of different models in it including the BS Roformer ones that are all the rage now and a ton of other specialized ones. I know how to use demucs but not the rest of those. And it supports model fusion? It's like mvsep!
@x0 It really is cool yeah.