WordPress: Allow other mime types uploads

<?php
//allow to upload swf and exe and...
function UploadOtherMimes ($mimes) {
    if ( function_exists( 'current_user_can' ) )
        $unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' );
    if ( !empty( $unfiltered ) ) {
        $mimes = array( 'swf' => 'application/x-shockwave-flash',
                'exe' => 'application/x-msdownload',
                'zip' => 'multipart/x-zip',
                'mp3' => 'audio/x-mpeg' );
    }
    return $mimes;
}
add_filter('upload_mimes','UploadOtherMimes');