Not able to play mp3 file on Google Speaker

Configuration
1

Hello Everyone,
I have copied mp3 file in /config/media and /config/www folders.
My configuration.yaml file is having following

homeassistant:
  external_url: https://my_sub_domain.my_domain.com
  internal_url: http://192.168.0.101:8123
  media_dirs:
     media: /config/media

I able to play mp3 file on Google Speaker with following code from Developer Tools

action: media_player.play_media
target:
  entity_id: media_player.speaker_in_dining_room
data:
  media_content_type: audio/mp3
  media_content_id: https://my_sub_domain.my_domain.com/local/door_squeak.mp3

I also able to file from “My Media” of Home Assistant on peaker_in_dining_room.

But not able to play file with following code from Developer Tools

action: media_player.play_media
target:
  entity_id: media_player.speaker_in_dining_room
data:
  media_content_type: audio/mp3
  media_content_id: https://my_sub_domain.my_domain.com/media/local/door_squeak.mp3

Got following error

2025-05-03 01:58:35.410 ERROR (Thread-6) [homeassistant.components.cast.media_player] Failed to cast media https://my_sub_domain.my_domain.com/media/local/door_squeak.mp3?authSig=hbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiIyOTQxNTRlZmZjZjI0ZTkwOZmIwZGMwZGQ2YTI5ZSIsInBhdGgiOiIvbWVkaWEvbG9jYWwvMTI1MDk3X19kcmVlbF9fZG9vcl9zcXVlYWtfMjhfMDNfMTFfMTIubXAzIiwicGFyYW1zIjpbXSwiaWF0IjoxNMjAxNTEzLCJleHAiOjE3NDYyODc5MTN9.79ZG1oIunGqj5sQLULwo2S9MLSXEYHDRoTLzND44 from external_url (https://my_sub_domain.my_domain.com). Please make sure the URL is: Reachable from the cast device and either a publicly resolvable hostname or an IP address
2

Hello RAUS,

What kind of certs are you using in your external https?
It needs to be a traceable cert, not a local generated one.

3

Thanks. My domain is hosted on CloudFlare and using docker based Nginx Proxy Manager to reach to docker based Home Assistant. I am using SSL of Nginx Proxy Manager.

How can I check certificate that I am using is traceable and not local generated one. Sorry for very silly question.

4

On my firefox you click the lock in the status bar by the URL.

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It will tell you.

5

It looks connection to my website is secured and certificate is verified. See the attached screenshots. Am I missing anything else?

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6

If that is pointing to somewhere inside your instance, it is wrong…

For me in configuration.yaml

homeassistant:
  media_dirs:
    local: /media

Then the /media path becomes part of /local .
And put the mp3 in a folder in HA under

/media/mp3

(The media folder already exists, you would want to add a sub folder to that, or at least I did, to keep your OCD happy.)
When I want to use an MP3, the path is

media-source://media_source/local/mp3/Ships_Bell_4.mp3

Adjust as you desire, but that is a basic version of mine.
Longer version in here: HA Config

7

Thanks. I able to play required mp3 file on Google Nest speaker from /config/media folder after using media-source as above.

Thanks again.

1 Like