alsa problem (snd_pcm_open_noupdate) Unknown PCM default

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hello everyone,
i have an embedded board that im trying to run alsa on, but unfortunately im having trouble. i searched the list for similar problems and i found this:
http://sourceforge.net/mailarchive/message.php?msg_id=36898685
i have the exact same problems as this guy, however putting (what i think* are) the alsa configure files in the /usr/share/alsa folder on my embedded filesystem doesnt solve the problem that when i run:
# aplay
ALSA lib pcm.c:2099:(snd_pcm_open_noupdate) Unknown PCM default
aplay: main:547: audio open error: No such file or directory

can anyone tell me where i need to put these configuration files or tell me exactly what files the term "alsa configuration files" refers to?

btw, im using a gumstix embedded board from www.gumstix.com (documentation at http://docwiki.gumstix.org/Main_Page)

thank you so much to anyone who can spare the time to help me.

tony

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