Yes and yes. Obviously, you will need a bit more hardware than only a Raspberry Pi. The simplest one I found is here: http://opensource.com/life/15/2/music-lig

Yes and yes. Obviously, you will need a bit more hardware than only a Raspberry Pi. The simplest one I found is here: http://opensource.com/life/15/2/music-light-show-with-raspberry-pi http://opensource.com/life/15/2/music-light-show-with-raspbe... And there's plenty of other results on 'raspberry christmas lights'.