[PlanetCCRMA] sound path audacity

[tom poe]

I'm gathering leads for exploring how sound works with ccrma and 
recording, generally.

My daughter has an SBLive/emu10k sound card that seems to work fine with 
fc5 low-latency (the rtd one) kernel.  System sounds work, and even the 
xlite softphone application lets us hear the testing side "voice says 
testing volume . . . please adjust volume for comfort" (then the slide 
bar lets us adjust the volume).  But, when we go to the other side, 
where it tests for hearing the microphone capture/playback, there's no 
delayed playback.  Can't figure out what's happening when the microphone 
is used to speak.  With no application active, my granddaughter can 
speak into the microphone and hear herself through the speakers.  When I 
bring up audacity (used yum and I think the audacity package from livna 
repository), there's no activity with the microphone, and the I/O shows 
it's using /dev/dsp as the audio path. 

My question is, can you point me to info about how to follow application 
-> sound card -> speakers?  Also, is there a command that shows what the 
system path is that is being used by an application?  I saw some stuff 
about ethereal, but have no idea how to coordinate it with an 
application like audacity.  Any help appreciated.
Tom
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