title: Add mp3 codec to qt-project
body: <p>I am really new to Qt development as well as audio codecs. I recently found a way to play mp3 sound using QSound. I want to play it in my qt project using QAudioOutput, but there is no mp3 codec in QAudioDeviceInfo::supportedCodecs().</p>
  
  <p>I tried install mp3 codec but it is still not listed in QAudioDeviceInfo::supportedCodecs(). How can I add a codec to QAudioDeviceInfo::supportedCodecs()?</p>