By using www.watchconcord.com you can watch live services or recordings of previous services.  Just scroll down the list on the right to select the date and time of the service you wish to watch.  

You may also access past and current recordings at the links below.

https://vimeo.com/user110222296

http://myconcordstreet.org/grow/sermon-archives

https://www.facebook.com/concordstreetchurch/