None of the songs are available (Here is a screenshot after I made the player visible: http://i.imgur.com/eP3sK.jpg )
You guys may have been banned... looks like YouTube doesn't like to have its player hidden.
You guys may have been banned... looks like YouTube doesn't like to have its player hidden.
You aren't allowed to:
"separate, isolate, or modify the audio or video components of any YouTube audiovisual content made available through the YouTube API;
promote separately the audio or video components of any YouTube audiovisual content made available through the YouTube API;
access any portion of any YouTube audiovisual content by any means other than use of a YouTube player or other video player expressly authorized by YouTube;"
https://developers.google.com/youtube/terms
Why wouldn't you read the API terms and comply with them before wasting all the development effort on something that will only get shut down? My advice is switch to the soundcloud API. http://developers.soundcloud.com/