tiny fix

server/djrandom/frontend/static/player.js

@@ -113,10 +113,10 @@ djr.Playlist.prototype.allSongs = function() {
 djr.Playlist.prototype.createUniqueChunk = function(songs, title) {
   var unique = [], i;
   for (i = 0; i < songs.length; i++) {
-    if (this.song_map[song[i]] != null) {
+    if (this.song_map[songs[i]] != null) {
       continue;
     }
-    unique.push(song[i]);
+    unique.push(songs[i]);
   }
   if (unique.length > 0) {
     return new djr.PlaylistChunk(unique, title);