Hi,

I want to play a sound from a script, for example to signal it finished,
but I can't.

First problem: I can't find a CLI command able to play the sound files I
want, found in the default installed system:

er@Erebor4:~> aplay /usr/share/sounds/freedesktop/stereo/bell.oga
Playing raw data '/usr/share/sounds/freedesktop/stereo/bell.oga' :
Unsigned 8 bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...
cer@Erebor4:~>

This command produces horrible noise with any .oga file I try.


cer@Erebor4:~> madplay /usr/share/sounds/freedesktop/stereo/bell.oga
MPEG Audio Decoder 0.15.2 (beta) - Copyright © 2000-2004 Robert Leslie
et al.
audio: No such file or directory
cer@Erebor4:~>


cer@Erebor4:~> paplay /usr/share/sounds/freedesktop/stereo/bell.oga
cer@Erebor4:~>

(silence...)


cer@Erebor4:~> play /usr/share/sounds/freedesktop/stereo/bell.oga

/usr/share/sounds/freedesktop/stereo/bell.oga:

  File Size: 8.50k     Bit Rate: 487k
   Encoding: Vorbis
   Channels: 2 @ 16-bit
Samplerate: 44100Hz
Replaygain: off
   Duration: 00:00:00.14

In:100%  00:00:00.14 [00:00:00.00] Out:6.15k [  ====|====  ]
Clip:0
Done.
cer@Erebor4:~>

(silence...)



I can play sounds with VLC, but not being a CLI command, it starts a GUI
that then I have to close manually. "vlc --help" is huge, I have not
seen a way to play a sound and exit.


I can probably convert a sound to .wav, and play that one. play, aplay,
and paplay all work that way.



Second problem: I can not play them as root, and I do need them as rootm
because those scripts run as root.


Erebor4:~ # su cer - -c vlc
/usr/share/sounds/freedesktop/stereo/service-logout.oga
VLC media player 3.0.16 Vetinari (revision 3.0.13-8-g41878ff4f2)
[000055713e92b640] vlcpulse audio output error: PulseAudio server
connection failure: *Connection refused*
[000055713e8494e0] main libvlc: Running vlc with the default interface.
Use 'cvlc' to use vlc without interface.
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-cer'
[000055713e84ba40] main playlist: playlist is empty
QObject::~QObject: Timers cannot be stopped from another thread
Erebor4:~ #


Erebor4:~ # vlc /usr/share/sounds/freedesktop/stereo/service-logout.oga
VLC is not supposed to be run as root. Sorry.
If you need to use real-time priorities and/or privileged TCP ports
you can use vlc-wrapper (make sure it is Set-UID root and
cannot be run by non-trusted users first).
Erebor4:~ #


Erebor4:~ # su cer - -c "aplay
/usr/share/sounds/freedesktop/stereo/service-logout.oga"
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect:
Connection refused

aplay: main:830: audio open error: Connection refused
Erebor4:~ #


Erebor4:~ # su cer - -c "paplay
/usr/share/sounds/freedesktop/stereo/service-logout.oga"
Connection failure: Connection refused
pa_context_connect() failed: Connection refused
Erebor4:~ #





stuck.



--
Cheers / Saludos,

                Carlos E. R.

   (from oS Leap 15.3 x86_64 (Erebor-4))