You can sell your music made with LMMS, you can't sell / redistribute any parts of LMMS.
Your on Linux, so to me it seems Carla can do most of what you want ?
Best way to get LMMS (working) is to use this repository for openSUSE. https://geekosdaw.tuxfamily.org/en/ I use it my self, and have LMMS with Carla. :) After install you can also easily add your self to the audio group. There is in geekos a tool for that, which you can just click. When you click i...
Interesting, maybe I'll try this out, but it looks weird the lowest note need to be at C3.

I suspect its just about the notes need to be between C3 and C4.
You own the music you make with LMMS, but you do not own any parts of LMMS.
There are in LMMS a few example files, you can't redistribute those.
The files under demo's.

So if you create a track with LMMS, you can upload it to youtube.
You can use LMMS and create music with it. You can sell that music.

You can't however not sell parts of LMMS in anyway.
Carla has a windows version, but as far as I know, it cant do all the Linux version can do. I am a Linux user, so you probably better follow the advice from musikbear. If you really want to use Carla, I would advice to install Linux. There are a few music making specific distro, that give you an eas...
Please do, you might have found a bug with vestige and wine 9. This moves fwd with leaps Today a user has successfully build on Ubuntu with wine9 I have asked for his cmake-script, because i want to know how universal functional that is on other distros -if at all.. What I learned, is that there ca...
For reasons beyond me, I see a lot of wine related issues with LMMS. The only advice I can give is to find a distro aimed at making music or find a repository for you distro aimed at making music. Good to hear somebody has it working with wine9. :) I know it should not matter in theory which distro ...
Please do, you might have found a bug with vestige and wine 9.

But I am speculating, I don't have a clue on what is wrong. :(

To me its weird the windows version of reaper still works.