[pulseaudio-discuss] Sound not working

[James Board]

My PC is 64-bit CentOS 6.4 Linux and I'm trying to get sound working.  When I play a .wav file with paplay, no sounds happen.  If I try 'cat /dev/urandom | pacat' no sound happens.  I'm using the sound jacks on the systemboard (I have no separate sound card).  I know they work because when I boot into Windows, it plays sound okay.  I know pulseaudio is running because I see the process when I run 'ps aux | grep pulseaudio'.

I tried following the instructions at http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Users/Troubleshooting/ but could not get any further because my machine doesn't have 'pavucontrol'.

If I try to play an mp3 file with "mplayer -ao alsa:device:hw=0 file.mp3" it complains.
    [AO_ALSA] alsa-lib: pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
    [AO_ALSA] Playback open error: Permission denied 
    Failed to initialize audio driver 'alsa:device=hw=0'
    Could not open/initialize audio device -> no sound.

I don't know what to do.  I'm new to pulseaudio, so I'm sorry if I'm asking dumb questions.  I only want to do simple things (like play a movie with mplayer) so hopefully I can get it working.  Can someone help me figure this out?  Thank you.



Here are some other random command I tried, and their error messages (NOTE: these errors might occur because pulseaudio is already running):

> pulseaudio  
    E: socket-server.c: bind(): Address already in use 
    E: module.c: Failed to load  module "module-esound-protocol-unix" (argument: "")
    E: main.c: Module load failed.
    E: main.c: Failed to initialize daemon.

> pulseaudio --daemonize
    E: main.c: Daemon startup failed.
> pulseaudio -nC
W: main.c: D-Bus name org.pulseaudio.Server already taken. Weird shit!
Welcome to PulseAudio! Use "help" for usage information.
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