Android phone as media player

[sleek pollen]

**Hi - novice here!
I'm looking for a way to turn my Android phone into a media player/speaker to use in my automation. **

The goal is to set a voice assistant sentence that will trigger a mp3 file to play back on my phone. I'm using the "Media player: Play media" action to play the file. All of this is already set, all I'm missing is a device/entity id.

Please let me know what info you need, this is all new to me. Thanks in advance!

In the screenshot below is my automation. A computer is temporarily set as the target for testing purposes - this is what I'm looking to replace with my phone.

Alternative: A way to play the file on whatever device triggers the automation.

[dapper wave]

What is the purpose of the screenshot if you censor literally everything that is not the standard skeleton of an empty automation?

[sleek pollen]

Sorry about that. What I censored was real names in the examples and other personal stuff. If you need a screenshot of the blank automation I can share one. But I can't select my mp3 file without first setting a target, hence why I filled it with a temporary entity.

Its purpose was simply to show visually what I was working with, because I'm new to this interface and wasn't sure if the terms I used were precise enough.

[iron wedge]

I'm fairly certain that you just can't do this. Android phones are not generic media players, that's not a feature provided by the companion app.