I think Musehub.com is a sister project within Muse Group that helps mitigate the cost of paying professional developers to work on Audacity and MuseScore.

In the case of Muse Score it also provides a marketplace for third parties.

I don’t use it but I can see why it exists…ordinary folks expect cloud services these days. And if I had a different use case, it would help me get stuff done.

But for what it’s worth with Audacity I don’t see it pop up as a location on my computer.