Version 22.04.2

Under Settings, Configure Kdenlive, Default apps, audio editing, it seems I can input the path of default app.

Currently, I am using audacity. However, I do not how to find the path of Audacity

Question: Once input, does it mean when I press edit clip, I can bring up the prog to edit the audio?
Question: Do you know how to find the path? I am using Linux but really a beginner