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Music Player Daemon (MPD) for Debian
------------------------------------

After installation, you will need to populate the MPD database. Update
mpd.conf to point to your music directory, or move/symlink your music into the
directory configured for mpd. Then, request a database update, preferably
through a client such as running "mpc update", or by restarting the mpd
daemon.

The recommended way to run a "personal" mpd, as your own user while logged into
a graphical user session from which a pulseaudio daemon has been started (as is
the default in Debian nowadays), is to disable the default system service
using the command (as root) "update-rc.d mpd disable", or
"systemctl disable mpd" if you're using systemd. mpd is then
started through the XDG autostart mechanism upon logging into your desktop
environment, provided it can find a valid config file (such as ~/.mpdconf).
Starting from the provided mpdconf.example, you'll likely want to uncomment and
adjust all options in the "Files and directories" section, set bind_to_address
(see below) as well as enable the non-optional pulse configuration.

If on the other hand you want to set up additional instances of mpd as a
system service, create a copy of your /etc/mpd.conf for each instance.
Make sure that each instance has a different pid_file, state_file and
bind_to_address/port. You probably want to specify a different
audio_output for each, too.
For sysvinit you need a copy of /etc/init.d/mpd for each instance,
properly adjusting the value of MPDCONF at the top.  Activate each copy
by running "update-rc.d <initscript-copy> defaults" on it.
For systemd make copies of /lib/systemd/system/mpd.{service,socket} in
/etc/systemd/system/ as desired.  Adjust the Description and
ListenStream directives, and add the path to the respective copy of
mpd.conf to ExecStart. Activate and start each instance using the
'systemctl enable' and 'systemctl start' commands.
Watch package updates for changes to the default init script / systemd
units, as your copies will not be upgraded.

In the default /etc/mpd.conf, bind_to_address is set to "localhost" in
order to prevent other (possibly untrusted) hosts from accessing MPD.
If you wish to allow other hosts to access MPD, you must change this
value to an appropriate interface, or comment it out to enable listening
on all network interfaces.

When using ALSA with dmix, you may run into problems sharing the sound card
between the "mpd" user and your own account. A workaround is to use ALSA's
"ipc_key_add_uid" and "ipc_perm" directives. See the ALSA documentation for
instructions on how to add this to your configuration.

Similarly, if you plan to use a JACK output, you might need to make mpd and
jackd run under the same user, since a typical JACK setup doesn't permit
several users to access the sound daemon.