Jasen Betts wrote:
Waitaminit. I've long wondered if the soundcard could not take input
as data. Rather like the com port? where's this software? Linux?
in linux you can do

od -tx1 /dev/audio

and get a crude hexadecimal dump of the soundcards input mixer
(so to read line-in or mic you need to turn them on using aumix etc)

if you want something better google for this:

soundcard software oscilloscope linux
Way kewl. thanx. got http://radio.linux.org.au/?sectpat=All&ordpat=title
which seems to have what I'm looking for.