I build this for my niece because she is to young to read the real clock.
sudo apt-get update sudo apt-get install build-essential python-dev git scons swig
git clone https://github.com/jgarff/rpi_ws281x.git cd rpi_ws281x scons
cd python sudo python setup.py install
cd /etc/modprobe.d sudo nano alsa-blacklist.conf
add blacklist snd_bcm2835 to the file. save it
sudo reboot