in the download form, the hidden element value references the Music column:
<input type="hidden" value="<?php echo($row_WADAMusic['Music']); ?>" id="Download2" name="Download2"/>
but that column is not included in the result from the WADAMusic recordset:
$query_WADAMusic = "SELECT MusicID, Title, DateAdded FROM Music ORDER BY Title ASC";
that recordset is only returning the MusicID, Title, DateAdded columns.