Install the mpd and mpc packages

add snd_bcm2835 to /etc/modules

• install the mpd and mpc packages:
  sudo apt-get install mpd mpc

• change the permissions of mpd (just to make sure):
  sudo service mpd stop
  sudo chmod -R g+w /var/lib/mpd
  sudo chmod -R g+w /var/run/mpd

• make a change to the mpd config file /etc/mpd.conf
  sudo nano /etc/mpd.confComment OUT the line:
  bind_to_address “localhost”So, change it to:
  # bind_to_address “localhost”

• reboot your Raspberry PI:
  sudo shutdown now -r

• after it’s up and running again add an Internet radio URL, for instance:
  mpc add http://icecast.omroep.nl/3fm-bb-mp3

• to start playing the stream type:
  mpc play

• some useful mpc commands (use ‘mpc help‘ to see them all):
  mpc – Display status
  mpc current – Show the currently playing song
  mpc stop – Stop the currently playing playlists
  mpc clear – Clear the current playlist

Add USB sound card 
sudo nano /etc/modprobe.d/alsa-base.conf
For all but the most recent Raspbian Wheezy releases, look for the line that reads:
#options snd-usb-audio index=0
Change this to:

options snd-usb-audio index=0

amixer cset numid=3 1