For other Android devices, you must use intermediary "bridge" apps to break the system's standard audio restrictions.
If you want, I can:
If you simply want to route all internal audio (games, music, notifications) to a recorder or stream, Google finally added native support in via the MediaProjection API. virtual audio cable for android
Here’s a detailed, balanced review for a app. Since Android doesn’t have a native system-level virtual audio cable like Windows, such apps typically route audio between apps (e.g., from a music player to a recorder, or mic to a streaming app). For other Android devices, you must use intermediary
Apps like AZ Screen Recorder or the built-in Android Screen Recorder use the official Google API to capture sound directly from your games. For other Android devices