See also Audio

On a PC with a Geode 500MHz processor and 500 MB RAM
Bold name: prefered

On an unknown PC
For video's cvlc uses one fourth of the cpu resources compared to mpv
For audio only mpv is more efficient

Intuïtive ncurses music player
Run mocp to start it
? gives help info

mplayer is superseded by mpv

When you get:

Cannot open file /home/user/.mplayer/input.conf' No such file or directory
Failed to open /home/user/.mplayer/input.conf.

do

touch  /home/user/.mplayer/input.conf

to resolve this.
If you want to know more about input.conf see chapter 3.3 Control of the MPlayer documentation
Here you can find a bigger example

mpv cdda:///dev/dvd

Source: ffmpeg streamingGuide

PulseAudio is a networked low-latency sound server for Linux, POSIX and Windows systems

Work in progress

Debian on PulseAudio
PulseAudio (The PulseAudio Sound System) works on top of ALSA (Advanced Linux Sound Architecture), the successor of the OSS (Open Sound System)

Pulseaudio runs in user mode

Tools and commands

• pacmd - Reconfigure a PulseAudio sound server during runtime
• pactl - Control a running PulseAudio sound server
• pulseaudio-module-zeroconf
• pulseaudio-utils
  • pacat - Cat raw audio data to a PulseAudio sink
  • pacmd - Connect to PulseAudio's built-in command line control interface
  • pactl - Send a control command to a PulseAudio server
  • padsp - /dev/dsp wrapper to transparently support OSS applications
  • paplay - Playback a WAV file via a PulseAudio sink
  • parec - Cat raw audio data from a PulseAudio source
  • pax11publish - Store/retrieve PulseAudio default server/sink/source settings in the X11 root window
  • systemctl --user restart pulseaudio.service
  • systemctl --user restart pulseaudio.socket

TCP support with anonymous clients

• General:
  • Install ALSA: aptitude install alsa-oss alsa-utils libasound2 libasound2-plugins
• Client: The source computer of the sound
  • aptitude install module-zeroconf-discover
  • If you are running a windows manager do aptitude install pasystray
  • Make sure /etc/pulse/default.pa contains load-module module-zeroconf-discover (searches for pulseaudio servers on the LAN)
  • Manually run load-module module-zeroconf-discover
  • Restart pulseaudio with pulseaudio --daemonize=yes (when ran as a systemd server use --daemonize=no
  • Set your server to connect to the client with pasystray
• Server: The computer that makes the sound hearable via the speakersystem connected to it
  • aptitude install avahi-daemon pulseaudio-module-zeroconf
  • Make sure etc/pulse/default.pa contains load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1;192.168.0.0/24 auth-anonymous=1

Some more ideas to get it working

• Pipe system sound to another computer
• Pi pulseaudio network stream audio linux.html
• How can i restart pulseaudio without having to logout
• How do I run pulseaudio in a headless-server installation
• How to stream music over the network to multiple computers

pulseaudio -D

E: [pulseaudio] main.c: Daemon startup failed.

• paman - PulseAudio Manager (GTK)
• paprefs - PulseAudio Preferences (GTK)
• pasystray - PulseAudio controller for the system tray
• pavucontrol - A volume control for the PulseAudio sound server
• pavumeter - A volume meter for the PulseAudio sound server

mpd
Music Player Daemon (MPD) is a server that allows remote access for playing audio files (Ogg-Vorbis, FLAC, MP3, Wave, and AIFF), streams (Ogg-Vorbis, MP3) and managing playlists.
The design focus is on integrating a computer into a stereo system that provides control for music playback over a TCP/IP network.
The goals are to be easy to install and use, to have minimal resource requirements (it has been reported to run fine on a Pentium 75), and to remain stable and flexible.

Edit /etc/mpd.conf and turn

audio_output {
      type            "httpd"
      name            "My HTTP Stream"
      port            "8000"

on (remove the #)
Set the firewalls the right way
Run

systemctl enable mpd.service
systemctl status mpd.service
systemctl start mpd.service

Multimedia player
cvlc is the commandline interface version

• Tools | Effects and Filters | Video Effects | Geometry | Do one of
  • turn on the Transform checkbox | Select the needed action
  • turn on the Rotate checkbox | Rotate with the wheel

• Check if pulseaudio is running
  • systemctl is-active pulseaudio

inactive

• or just by running pulseaudio

pulseaudio

E: [pulseaudio] pid.c: Daemon already running.
E: [pulseaudio] main.c: pa_pid_file_create() failed.

To be investigated

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