First of all, thanks for your reply. It is appreciated.
As you know everyone from the website can send an audio, anonymously.
The app is better than an anonymous user, and it is donated to Mozilla by a volunteer.
I don’t undervaluate your phrase, but the context is different. Mozilla accept audio from everyone, even if anonymous. This app is a huge donation, and could help Mozilla.
Usually it could be an issue. But this is not the usual context. I know fair well laws on IP, I work on them since 1996. Talk with your legal department: the solution to all fears is to consider to fork and use the app officially, as previously suggested. In Laws there are many more solutions than no / yes.
I can understand you have a rigid roadmap. But this is a gift, technically excellent.
I stay tuned.