Start a stream and establish the small player
The help says there is no dedicated audio-only mode at present. Instead, begin the film or performance in the iOS or Android application and move into its Picture-in-Picture route. Check that the reduced player is visible while you are outside the full application.
Treat that visible state as a checkpoint. A phone displaying the concert inside the main app has not yet reached the condition the help describes. Before putting the device away, confirm the small player remains active on the home screen or alongside another application.
Lock only after leaving the full application
Once the reduced player is active outside medici.tv, lock the device. The official explanation says the audio can then continue. It warns that locking directly from the full medici.tv screen stops playback, which explains why two seemingly similar attempts may have different results.
Avoid swiping away the medici.tv application from the recent-apps view while moving to the home screen. That closes the application rather than leaving its player running. If playback stops, repeat the sequence deliberately and note the exact state at which the sound ends.
Keep this listening method separate from offline access
Picture-in-Picture still plays a video stream; the described method does not create a music file or downloaded recording. Plan for the connection required by the stream rather than assuming that locking the screen makes the performance available without internet access.
For an unresolved problem, report the phone model, operating system, app version and whether the small player appeared before locking. Also distinguish closing the app from merely moving it into the background. These observations test the documented mechanism without promising that every device’s power-management settings or every app version will behave identically.
Questions about this guide
Is this a dedicated audio-only feature?
medici.tv says it is a Picture-in-Picture workaround, rather than an audio-only mode.
When should the screen be locked?
After leaving the full application with Picture-in-Picture active outside it.