I've used an SBLive 512 with Audacity to do full
duplex - but note that full
duplex in Audacity 1.0 for Linux doesn't work; a known bug. Try the latest
beta version 1.1.1 and see if full duplex works. That version has plenty of
bugs, but there is a new beta due next month.
I tried telling Audacity 1.1.1 to play while recording, just last
night. Debian 3.0, kernel 2.4.20, alsa 0.9.0rc5. Crashed my system,
had to use the power switch. Did I mention I like journalled
filesystems? :)
...and, yeah, exporting to ogg lets me play the ogg and record...
--
Ben Pearre
http://hebb.mit.edu/~ben