Music Player Daemon
http://www.musicpd.org/
$ sudo apt-get update
$ sudo apt-get upgrade
$ mkdir ~/Music
$ sudo apt-get install mpd nano
$ sudo apt-get install alsa-utils
$ sudo modprobe snd_bcm2835
$ sudo nano /etc/rc.local
$ sudo amixer cset numid=3 1
Set Audio output from Raspberry Pi: 0=auto, 1=analog, 2=hdmi
I put analog output from Raspberry Pi > Hi-Fi.
$ sudo alsamixer
$ sudo nano /etc/mpd.conf
Change the following lines:
music_directory "/home/pi/music"
playlist_directory "/home/pi/Music/mpd/playlists"
bind_to_address "your static IP, example 192.168.1.16"
or
bind_to_address "127.0.0.1"
mixer_type "software"
$ sudo chmod g+w /var/lib/mpd/music/ /var/lib/mpd/playlists/
$ sudo chgrp audio /var/lib/mpd/music/ /var/lib/mpd/playlists/
$ sudo service mpd restart
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MPD Client install on Mint, Xubuntu, Ubuntu
$ sudo apt-get install ufw ario gmpc
$ sudo ufw disable
You must allow port 6600 in firewall.
$ sudo ufw proto tcp from 192.168.1.16 to any port 6600
192.168.1.16 is only my example, you must put your Raspberry Pi IP address !!!
$ sudo ufw enable
Ario
$ ario
Configure Ario, Edit > Preferences > Host "Raspberry Pi IP exp. 192.168.1.16"

Gnome Music Player Client
$ gmpc
Configure gmpc, Music > Preferences > Host "Raspberry Pi IP exp. 192.168.1.16" > Music directory > /home/pi/Music
MPDroid client for Android:
https://play.google.com/store/apps/details?id=com.namelessdev.mpdroid
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