12-07-2010
Can't play sound files with aplay or cat to /dev/dsp
I am having problems using soundes. Until a few moments ago
the following commands produced errors and no sound:
cat /usr/share/apps/kolf/sounds/blackhole.wav/ > /dev/dsp yielded:
/dev/dsp: Invalid argument
cat /usr/share/apps/kolf/sounds/blackhole.wav > /dev/audio yelded:
/dev/audio: Invalid argument
aplay /usr/share/apps/kolf/sounds/blackhole.wav yielded:
main:590: audio open error: No such file or directory
and yet mplayer was happily playing audio with tv video. For that program the video is set up for drive 0 but for spurious reasons the program has to be fiddled to use drive 1. The camera, BT787, and VIA 8235 cards are 0, 1, 2 respectively. I don't know if this is related.
Now for no apparent reason it has started working. This is not a connection problem. It had been working until I installed Timidity++ which errors out also.
This is a 4 day headache so would make me happy if someone has a solution.
BTW I have seen suggestions to remove PCM add PCM, fiddle with XMMS and other supposed solutions. In scanning ALSAhowto I could find nothing that could link the responses I am getting. Thanks.
Last edited by slak0; 12-07-2010 at 05:29 AM..
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LEARN ABOUT DEBIAN
mpc123
mpc123(1) General Commands Manual mpc123(1)
NAME
mpc123 - your handy Musepack audio player
SYNOPSIS
mpc123 [options] file(s)
DESCRIPTION
mpc123 is a command-line player for the Musepack audio compression format. mpc123 reads mpc audio files and decodes them to the devices
specified on the command line.
During playback, you can pass to the next playlist element (or a random one if one of the -z and -Z options were used, see below) by send-
ing SIGINT to the process, thus usually pressing ^C will act as a "next-button" for the player.
OPTIONS
--gain N, -g N
Set gain (audio volume) to N (0-100 inclusive, default 100, 0 mutes sound)
-o driver
Set output devicetype to driver; possible drivers include:
oss
Linux Open Sound System
alsa
Advanced Linux Sound Architecture
alsa09
ALSA version 0.9 and newer (you should really be using this)
esd
Enlightenment sound daemon
arts
Analog Real Time System (kde sound daemon)
null
Debugging output target
--audiodevice dev, -a dev
Use dev for audio-out; If not specified, the program tries to pick some sane defaults, based on the used audio output driver. Common
devices include:
/dev/dsp or /dev/dsp1
for oss output
default or hw:0
for alsa09 output
--au filename.au, -u filename.au
Use au file filename.au for output
--cdr filename.cdr, -c filename.cdr
Use raw file filename.cdr for output (this can be used directly with cdrecord's -audio option)
--wav filename.wav, -w filename.wav
Use wave file filename.wav for output
--list file, -@ file
Use playlist file as list of Musepack files; The playlist format is simple: one file per line. You can easily generate a playlist for
mpc123 with the find(1) command:
find /path/to/musicroot -iname *.mpc -fprint file
--random, -Z
Play files randomly until interrupted
--shuffle, -z
Shuffle list of files before playing
--verbose, -v
Increase verbosity (default verbosity is 0), the more -v, the more verbose mpc123 becomes
--quiet, -q
Reset verbosity to 0 (no title or boilerplate); this is the default
--help, -h
Print the help screen, with some brief usage information
AUTHOR
This manual page was written by Daniele Sempione <scrows at oziosi.org>; Fernando Vezzosi <fvezzosi at masobit.net> made some edits
January 2006 mpc123(1)