Step 4 · Use it
Sound
Sound from your Andronix distro plays in the app, through the phone's speakers or headphones, with nothing to set up.
Sound is built in: the desktop's sound plays in the Andronix app, and keeps playing when you leave the app. Mute is on the desktop's toolbar and in the Linux is running notification. There's no microphone yet.
In Termux, sound works differently: see Sound in Termux.
Dev Packs
Add Python, Node.js, Java, Go or PostgreSQL to your Andronix distro with one command, using the distro's own packages.
Back Up Your Files
Keep your files from a distro in the app - there's no in-app backup yet, so copy them out with the Files app or the shared folders - and move a Termux backup into the app.