The following walk through works on Debian 9, 10, and 11.

1. Install snapd

   sudo apt update
   sudo apt install snapd
   sudo snap install core
   sudo snap refresh core

2. Remove audacity installed through packet manager

   sudo apt remove audacity

3. Install audacity through snap

   sudo snap install audacity
   sudo ln -s /snap/bin/certbot /usr/bin/certbot

4. Add permissions for audacity to use the alsa sound system

   sudo snap connect audacity:alsa

• Note: if you have installed and used audacity through the packet manager before, keeping settings will allow the new audacity 3 install to use those settings. This means do not use –purge when removing audacity in step 2 and do not remove folder ~/.audacity-data from your user's home folder.

I use an Android tablet to remote control my Audacity installation on the server.

• Install any VNC client on your mobile device
• Install VNC on the server and tweak permissions for accessing the X server through Snap