Creating a media player to control my CD player via IR

Configuration
1

I have an IR blaster and have been using it happily to control a number of devices in my study. It has learnt the controls from my CD player which work well but want I want is to create a media player for my CD player and then use the great media player cards with my CD player.

I had hoped I could do this via the universal media player as per the code at the end of this post and although it works well with the custom:mini-media-player there is one glitch with the media-control card. I can turn the player on and then I get a play_pause icon but clicking on it does nothing. However if I use the custom:mini-media-player card to start it, then I can start and pause the play using the media-control card.

Very frustrating - any ideas?

Andrew

media_player:
  - platform: universal
    name: ET3 CD Player
    state_template: >
      {% if is_state('input_select.et3_status', 'on') %}
        on
      {% elif is_state('input_select.et3_status', 'playing') %}
        playing
      {% elif is_state('input_select.et3_status', 'paused') %}
        paused
      {% else %}
        off
      {% endif %}
    commands:
      turn_on:
        service: script.turn_on
        target:
          entity_id: script.et3_on
      turn_off:
        service: script.turn_on
        target:
          entity_id: script.et3_off
      media_play:
        service: script.turn_on
        target:
          entity_id: script.et3_play
      media_pause:
        service: script.turn_on
        target:
          entity_id: script.et3_pause
      media_play_pause:
        service: script.turn_on
        target:
          entity_id: script.et3_play_pause
      media_next_track:
        service: script.turn_on
        target:
          entity_id: script.et3_next_track
      media_previous_track:
        service: script.turn_on
        target:
          entity_id: script.et3_previous_track
    children: []