title: Uploading MP3 file to Firebase Storage ends up being a video/mp3 file
body: <p>Im trying to save an audio in the new Firebase Storage option, the audio is set as a .mp3 file and the uploaded to Firebase via this code : <code>UploadTask uploadAudio = storageRef.putFile(audioUri);</code> 
  The problem is that the audio is stored as a video/mp4 file, and because of that the MediaPlayer does not reproduce it as an audio, how can I fix this?</p>