First, sestudio sets itself up on this phone.

It downloads about 200 MB — use Wi-Fi. This happens once and takes 2–4 minutes.

sestudio needs three things from Android:

Background use: its server keeps going while the screen is off or another app is open, or playback and downloads stop.

Notifications: one stays while the server runs; it is how you stop it.

All files access: your music folders, and downloads where you choose.