title: How to send audio file using telethon so that the audio can be played in in-app media player for mobile?
body: <p>I've tried to use both function, the audio still cannot be played in-<strong>app media player</strong></p>
  
  <p><code>await client.send_file(chat, '/my/songs/song.mp3', voice_note=True)</code></p>
  
  <p><code>await client.send_file(chat, '/my/songs/song.mp3', attributes=[DocumentAttributeFilename(file_name=fileName + '.mp3'), DocumentAttributeAudio(duration=100, voice=True)])</code></p>