audio player example: remove mp3s

examples/ui/audio_player/js/example.js

@@ -1040,7 +1040,7 @@ Ox.load('UI', function() {
         Ox.forEach(tree, function(albums, artist) {
             artist = {
                 albums: Ox.len(albums),
-                artwork: 'mp3/' + artist + '/artwork.png',
+                artwork: 'http://0x2620.org/music/' + artist + '/artwork.png',
                 id: artist,
                 items: [],
                 name: artist