Media_player path

Configuration
1

Hello,
I have a media player configurerd and tts run very well.
I would like to play mp3 file on the same device.
The sound is not played…

Questions:
media_player.media_play or media_player.play_media ?

I installl as standard with docker.

What is the path to the mp3 files ?
With Samba, I crated a folder, his name is ‘mp3’

Is the followinfg field name correct ?

   data:
      entity_id: media_player.sm_a505w_161
      media_content_id: http://192.168.1.106/config/mp3/doorbell.mp3
      media_content_type: 'audio/mp3' 

Is that correct ?
Many thanks !!!!
2 
- service: media_player.play_media
  data:
    entity_id: media_player.sm_a505w_161
    media_content_id: /local/mp3/doorbell.mp3 #www/mp3/...
    media_content_type: music
3

Many thanks for your reply.
I have a Sony bravia tv.
The TTS service with the tv run as attended with default configuration.
I also would like to be able to play mp3.
I use your recommendations and my config is:

alias: "doorbell_automation"
trigger:
 - platform: state
   entity_id: binary_sensor.doorbell_contact
   to: 'off'
action:
 - service: media_player.turn_on
   entity_id: media_player.xbr_49x800e
   
 - service: media_player.volume_set
   data:
      entity_id: media_player.xbr_49x800e
      volume_level: 1
 
 - service: media_player.play_media
   data:
      entity_id: media_player.xbr_49x800e
      media_content_id: /local/mp3/doorbell.mp3
      media_content_type: music

But I heard nothing…
The tv turn on, the cast icon is displayed.
Can you help me to provide the means to debug te situation ?
I will be very happy to solve the issue…

Regards