[nyanpasu64]

Possibly relevant, MuseScore has a CLA requiring that all code contributors grant MuseScore the right to use the code in proprietary software. Audacity doesn't have such a clause and I don't know if they'll be able to get past contributors to sign such an agreement.

[DistressedDrone]

All 126 of them? Doubtful.

[coldtea]

Would they need more than 10 of them to agree to have 90% of the code they want to use? Doubtful too.