[K12OSN] sound... still not working

[Tom Wolfe]

OK, I've gone through the suggestions folks have kindly passed on, and the
ltsp & K12ltsp sound pages (below) and I'm totally stumped. For example:
- I've tried from KDE to change the sound settings to enable network sound
- I've added the -public flag to the /opt/ltsp/i386/etc/rc.sound file,
etc.
- I'm using a very common and popular sound card (Ensoniq ES1370 AudioPCI,
see lspci output below) as suggested

The pages I've used as reference:
http://www.k12ltsp.org/phpwiki/index.php/WorkstationSound
http://wiki.ltsp.org/twiki/bin/view/Ltsp/Sound

lspci on a workstation console (I uncommented the line in lts.conf that
gives me a terminal with ctrl-alt-F2) produces the following:
sawback2 at dyyme% cat lspci.txt
0000:00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
0000:00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03)
0000:00:04.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02)
0000:00:04.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
0000:00:04.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01)
0000:00:04.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
0000:00:0a.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 08)
0000:00:0d.0 Multimedia audio controller: Ensoniq ES1370 [AudioPCI]
0000:01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200 AGP (rev 03)

Here is the relevant excerpt from lts.conf on the server
(/opt/ltsp/i386/etc/lts.conf):
        # enable sound by default
        SOUND              = Y
        # choose either esd or nasd to be the default (esd only on x86_64)
        SOUND_DAEMON       = "esd"
        # SOUND_DAEMON     = "nasd"

        # default sound volume
        VOLUME             = 75

... I've tried both esd and nasd with kde, gnome, and icewm in all
combinations. Here's a sample output of esdplay after trying to play a
sound:
[root at server Desktop]# esdplay lose.wav
ALSA lib confmisc.c:672:(snd_func_card_driver) cannot find card '0'
ALSA lib conf.c:3492:(_snd_config_evaluate) function snd_func_card_driver
returned error: No such device
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:3492:(_snd_config_evaluate) function snd_func_concat
returned error: No such device
ALSA lib confmisc.c:1072:(snd_func_refer) error evaluating name
ALSA lib conf.c:3492:(_snd_config_evaluate) function snd_func_refer
returned error: No such device
ALSA lib conf.c:3961:(snd_config_expand) Evaluate error: No such device
ALSA lib pcm.c:2099:(snd_pcm_open_noupdate) Unknown PCM default
ALSA lib confmisc.c:672:(snd_func_card_driver) cannot find card '0'
ALSA lib conf.c:3492:(_snd_config_evaluate) function snd_func_card_driver
returned error: No such device
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:3492:(_snd_config_evaluate) function snd_func_concat
returned error: No such device
ALSA lib confmisc.c:1072:(snd_func_refer) error evaluating name
ALSA lib conf.c:3492:(_snd_config_evaluate) function snd_func_refer
returned error: No such device
ALSA lib conf.c:3961:(snd_config_expand) Evaluate error: No such device
ALSA lib pcm.c:2099:(snd_pcm_open_noupdate) Unknown PCM default
[root at server Desktop]#

... Gnome displays the speaker icon in the top right with a red slash;
clicking on it brings up an error stating that it can't find any elements
and/or devices to control

Any helpful tips for me?

I've given up on the "it's easy, it works" and am starting to feel more
"duh?" than anything.

Thanks,
Tom Wolfe