Whenever Lightburn adds a “print to” function, it should work with the Muse laser, as supposedly the Muse accepts “printing” from other programs. I haven’t actually tested this, however.
The Muse software, re3, is probably one of the most difficult, slow and frustrating programs I have ever used and is so poorly designed. This is in contrast to Lightburn (which I have used with a diode laser) which is an absolute joy to use. Thus, I have been anxiously awaiting both the “print to”, PDF export function with every Lightburn update, but alas, this has not happened as of yet.