protected function leadMP3()
	{
		$lead = $this->ffprobeFormat("mp1", "mp2", "mp3", "mpg", "mpeg");

		if ($lead === true)
		{
			return $this->closeCase("mp3", "audio/mpeg", $this->metadata);
		}

		return null;
	}
protected function leadMP3()
	{
		$lead = $this->ffprobeFormat("mp1", "mp2", "mp3", "mpg", "mpeg");

		if ($lead === true)
		{
			return $this->closeCase("mp3", "audio/mpeg", $this->metadata);
		}

		return null;
	}
protected function leadMP3 ( ) { $ lead = $ this -> ffprobeFormat ( "mp1" , "mp2" , "mp3" , "mpg" , "mpeg" ) ; if ( $ lead === true ) { return $ this -> closeCase ( "mp3" , "audio/mpeg" , $ this -> metadata ) ; } return null ; }
Checks if the file is a MP3

@return boolean|null
Checks if the file is a MP3