Audio Player

flowchart TB
  subgraph row1[" "]
    direction LR
    Explorer["UOperatingSystemExplorer"] --> File["UOperatingSystemAudioFile double-click"] --> Prog["BP_Prog_AudioPlayer"]
  end
  subgraph row2[" "]
    direction LR
    Play["UOperatingSystemProgramWidget plays USoundBase / media"]
  end
  Prog --> Play

Blueprint for the audio player bundled within the plugin can be accessed from Plugins/OperatingSystemSimulator/Content/OperatingSystemContent/Shared/Blueprints/Programs/AudioPlayer/BP_Prog_AudioPlayer.

Once you open the audio player program, you can see that the window override size is set and audio player is not allowed to resize.