Hi Ananda,
There are indeed no such options.
Thank you for asking nicely.
I personally think it would be in the best interests of most users to keep the interface movable.
That being said, @james is the owner of FxSound, and @bvijay is its lead engineer; I am only a moderator on the forum.
Also, FxSound just became open-source quite literally yesterday, and while it is uncertain what this will mean for the future of the software, I’m guessing that theoretically, just about any change is now possible, if someone is willing to develop it…