diff --git a/iTunesXMLparser.class.php b/iTunesXMLparser.class.php
index 08dc1d1..27a48a5 100644
--- a/iTunesXMLparser.class.php
+++ b/iTunesXMLparser.class.php
@@ -115,20 +115,19 @@ public function processPlaylists() {
 
 	// To be used with the uasort() array function
 	protected function sort( $left, $right ) {
-
 		$field = $this->sort_field;
 		$direction = $this->sort_direction;
 
-		if ( !isset( $left[ $field ] ) ) {
+		if ( !isset( $left->$field ) ) {
 			return 1;
 		}
-		elseif ( !isset( $right[ $field ] ) ) {
+		elseif ( !isset( $right->$field ) ) {
 			return -1;
 		}
 
 		// Return the strcmp() of the two fields
-		$left = $left[ $field ];
-		$right = $right[ $field ];
+		$left = $left->$field;
+		$right = $right->$field;
 
 		switch ( gettype( $left ) ) {