Salsa, Jay Dolan, jasonthomasdolan@yahoo.com

Salsa is a few lines of code meant for forwarding PCM data (your 
soundcard's output) to another host.

What's Necessary

::Alsa and associated utilities
::An Alsa-compatible media player
::Ssh access to a destination host

Installation

make [DESTDIR=/opt] install

Running

$ salsa  start [host streamfile]

How It Works

The shell script, salsa, first copies a default Alsa config file 
salsarc to ~/.asoundrc.  This file defines the salsa PCM device 
and makes it the default for normal playback.  Next, the salsad 
daemon is spawned and piped to an ssh session at the remote host, 
where salsad's output is fed to aplay.  That's it.

Tips

You'll probably want to setup ssh key auth on the remote host so 
that a password is not needed when starting salsa.

Edit the salsa control script and define $HOST to your needs.
This way, `salsa start` is sufficient for starting the daemon,
which could be handy if you wish to start salsa from init.

If you have a lowsy sound card (like I do), you may hear stutters 
and clicks.  This is not caused by the salsad daemon, but by 
less-than-optimal buffering on behalf of your card.  Tinker with 
the period and buffer sizes in salsarc.

The dmix PCM slave defined in salsarc uses the native sample rate 
of your sound card. Most cards are 48000, tho some cards/drivers 
default to 44100 or 96000.  You'll have to change the format 
passed to aplay in salsa, or simply specify rate 48000 in salsarc, 
if you own such a card.