Playing Feastive mp3 on Voice Preview via NodeRed - Error: extra keys not allowed @ data['media']
Hello hive mind and feastive greetings to everyone!
This should be really easy, I'm trying to play a specific local mp3 (onemoresleeps.mp3) on my Voice Preview.
Before you ask why I want to run it through nodered, I want to define dates, random song list etc for the doorbell, so I'm writting code to do that :)
Step 1 - Create what I want to do in an automation which works:
action: media_player.play_media
metadata: {}
target:
entity_id:
- media_player.ha_voice_assistant_media_player_2
data:
media:
media_content_id: media-source://media_source/local/onemoresleeps.mp3
media_content_type: audio/mpeg
metadata:
title: onemoresleeps.mp3
thumbnail: null
media_class: music
children_media_class: null
navigateIds:
- {}
- media_content_type: app
media_content_id: media-source://media_source
browse_entity_id: media_player.ha_voice_assistant_media_player_2
announce: true
Step 2 - Create this in NodeRed which fails:
{
"media": "{\"media_content_id\": \"media-source://media_source/local/onemoresleeps.mp3\", \"media_content_type\": \"music\"}",
"announce": "true"
}
Error:
I've tried putting the files both in the expected media folder and in a local\doorbells folder.
I'm sure it's something very stupid I'm doing but I just can't see the issue and I've tried about 8 different ways thus far....
Can anyone see my mistake?
Thanks in advance....
EF.
Posted Dec 13, 2025, 10:37 AM UTC