
The <code>fromUri</code> parameter, if specified, can be one of three possibilities :
<ul>
<li>The URL of a remote file.</li>
<li>The path of a local file. Hint: <a href="https://pub.dev/packages/path_provider">path_provider</a>
  can be useful if you want to get access to some directories on your device.</li>
<li>The name of a temporary file (without any slash '/').</li>
</ul>
</li>
</ul>
</li>
<li><strong><em>sampleRate:</em></strong> is mandatory with raw PCM codecs (<code>codec</code> == <code>Codec.pc