Media_player fail to play local mp3

Hello,
I have some difficulties to set the correct path for local path.
I run HA with docker.
NGING is used as proxy for https.

for playing media:

 - service: media_player.play_media
   data:
      entity_id: media_player.xbr_49x800e
      media_content_id: https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3
      media_content_type: 'music'

is working !

In the folder config I created a folder mp3

But If I replace the media content by:

      media_content_id: http://192.168.1.106/local/mp3/doorbell.mp3
    

it doensn’t work.

I have no base_url defined because the local trafic is on http.
How can I debug this situation ?

Many thanks for your help !

Regards!

This is what I have working in my setup"

  action:
  - data:
      media_content_id: http://serverip:8123/local/audio/1-second-of-silence.mp3
      media_content_type: audio/mp4
    entity_id: media_player.ccannouncements
    service: media_player.play_media

I have the line for entity_id: ‘outside’ the data section.

BTW:
Obviously, my mp3-file I in a subfolder called ‘audio’ instead of your ‘mp3’ one.
I read in another thread that audio/mp4 is more reliable than audio/mp3 - so that’s why I’m using it.

Did you follow these steps for hosting files?

You need to make a folder called www in your config.

Ouahhhh many thanks for your help !
I never see I must to create the www folder !

Now it’s working perfectly ¨

Playing mp3 is much faster than tts !

Best regards !!!