I gave the closing keynote at BACON in London about Play, GitHub's internal music server. I also merged the next branch into master, which was a months-long effort to make Play possibly the greatest thing in a million milliseconds.
Play can be found on GitHub, and you can browse the Play organization on GitHub to check out our clients for iOS, Mac, Windows, Android, and other projects we've open sourced.
The video for this talk can be found on Vimeo.