PHP - $_FILES-Array will nicht wie ich will!

PHP-Code:
<?php

        if(isset($_POST['submit'])){
            if(isset($_FILES['song']['name'])) {
                $song_name = $_FILES['song']['name'];
            } else {
                $song_name = "-";
            }
            if(isset($_FILES['song']['tmp_name'])){
                $song_tmp_name = $_FILES['song']['tmp_name'];
            } else {
                $song_tmp_name = "-";
            }
            if(isset($_FILES['song']['size'])){
                $song_size = $_FILES['song']['size'];
            } else {
                $song_size = "-";
            }
            if(isset($_FILES['song']['type'])){
                $song_type = $_FILES['song']['type'];
            } else {
                $song_type = "-";
            }
            if(isset($_POST['name'])){
                $name = $_POST['name'];
            }
            if(isset($_POST['email'])){
                $email = $_POST['email'];
            }
            echo "Dein Song wird zur Überprüfung an einen Administrator gesendet und wird
            in kürze zur Verfügung stehen!<br><br>";
            echo "<b>Song-Informationen:</b><br>";
            echo "Dateiname: ".$song_name."<br>";
            echo "Dateigroesse: ".$song_size."<br>";
            echo "Dein Name: ".$name."<br>";
        } else  {

?>
    <div id="currently_playing_wrapper">
                <div id="currently_playing">
                <table cellpadding="0" cellspacing="0">
                <form action="ul.php" method="post">
                        <thead>
                            <tr>
                                <th align="left" style="width: 170px;">
                                    Song Uploaden
                                </th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td align="center">
                                    Song Ausw&auml;hlen:<br /><br /><hr />
                                    Dein Name:<br /><br />
                                    Deine E-Mail Adresse:<br />
                                </td>
                                <td colspan="2">                    
                                    <input type="file" name="song" ><br /><br /><br />
                                    <input type="text" name="name"><br /><br />    
                                    <input type="text" name="email"><br />                                
                        
                                </td>
                                <td align="right">
                                    <input type="submit" name="submit" value="Song Hochladen!">
                                </form>
                                </td>
                            </tr>
                        </tbody>
                    </table>
            </form>
            </div></div>
        <?php
        }
?>
Ich kan die Informationen von der Datei nicht Abrufen. Was hab ich falsch gemacht?? Bei Bedarf auch Teamviewer.
Hoffe auf Antwort Smile
MFG