Silent audio keep-alive creates persistent MediaSession, breaks Spotify / media apps

Paid user here. Noticed MacroDroid's background keep-alive mechanism (silent/short audio clip) registers an active MediaSession on Android. This has a few real consequences:

- Hijacks the Now Playing slot, displacing Spotify or any active media app

- Breaks Cast/media session continuity — audio apps lose their session state

- Appears in media controls on lock screen and notification shade

This is a known dirty-but-functional hack to survive aggressive OEM killers (I'm on Funtouch OS / Vivo), but the side effect is significant for anyone who listens to music or podcasts while MacroDroid runs in the background.

**Two possible fixes I'd love to see:**

1. Add a stream selector to the Play Sound action so the audio can be routed to the notification or alarm stream instead of media — this alone would stop the MediaSession conflict.

2. Or officially document that enabling "Run in Foreground" notification (Actions → MacroDroid → Run in Foreground) is a clean replacement for the audio keep-alive, so users can disable the audio hack entirely.

Happy to provide logs or more detail if helpful. Just wanted this on the radar since it's a real quality-of-life issue for media users.