I finally found a guide to installing the Wine version of your choice on Debian based distros. I have verified this guide on LinuxMint v22, it should also work for Ubuntu v24.04.
https://linuxgenie.net/install-wine-9-debian-12/
I know, I know, it starts out having you install Wine v9. Do it, unless it is already installed. To check if it is already installed, go to a terminal and type
Wine --version
The guide will show you how to downgrade later on.
I can now use v1.2.2 of the LMMS AppImage to load VST2 plugins into Vestige.
https://linuxgenie.net/install-wine-9-debian-12/
I know, I know, it starts out having you install Wine v9. Do it, unless it is already installed. To check if it is already installed, go to a terminal and type
Wine --version
The guide will show you how to downgrade later on.
I can now use v1.2.2 of the LMMS AppImage to load VST2 plugins into Vestige.