Hey sorry, for the late followup. I was getting compile/link errors related to Google Services dependencies. I think this is one of those situations where it's GPL-licensed, but not necessarily the most accessible.
The synth is free. Paid levels seem to be mostly for skins/presets/support. There are more wavetables in the paid version, though I don't know enough about wavetable synthesis to know how much that matters.
I haven't registered and downloaded the software from their website but I doubt it would come with any licensing or OSS mention. The marketing doesn't mention OSS either.
There's at least one thread asking for clarification on the subject which, as far as I can tell, is not formaly answered.
The repo you linked is 13 months old but it's informative nonetheless:
> Do not distribute the presets that come with the free version of Vital. They're under a separate license that does not allow redistribution.
So my best guess is that the author is granting himself an exemption and distributing that software as a closed source software. Which is legal, it certainly helps that there's only one author.
If we really wanted to know what's going on exactly, we should download the software from their website. If it's advertised as being OSS and under the GPL, we should ask for a copy of the source code of the distributed software, as provided by the GPL.
It's universally accepted that aggregating free software with non-free data does not make the software non-free. The explanation in the repo about the licensing is correct and perfectly okay from an OSS perspective.
The software's copyright holder cannot infringe his own copyright by distributing the software from his own website, even if he also offers a GPL license. If he were accepting contributions from other people you might have a case, but he says he isn't.
The GP isn't saying that the author is making the software unfree by mixing it with commercial software.
The GP is saying that author is distributing that software as unfree with a different license since as copyright holder, the author can do whatever they wish. QT, for example, is distributed as GPL or with a commercial license.
Which is to say the GP is correct this is possible and it's a sleazy maneuver.
Which is unfortunate since I actually am playing with Linux audio software and I'd love to find a good free software synthesizer. LMMS is OK but this does seem pretty impressive.
Oh, because the distributed binaries aren't really open-source because they're made from a different version of the source? That's true, and it might come back to bite the author.
What do you think of Vitalium? I don't know enough about synthesizers to have an informed opinion.
I'm only getting my feet wet on synthesizers but it gives the impression that it has a lot of cool and unique features, even compared to commercial synthesizers or LMMS, the synthesizer I've looked at the most .
The problem is these people saying they're open source then playing game pisses me off much more than if they said they were commercial with a free version.
So I'm torn on trying them. And I can't get the github code to compile on Ubuntu 20.
Public git repo or GTFO.