Recording streaming audio Sender: Linux
You question is very broad, and I don't have KDE running to test your examples, but I will tell you that on linux with alsa, the AC'97 capture settings must be setup right to get audio capturing to work. This is more to just give you some more tools to work with, rather than answering your questions about smil files, etc.
Start alsamixer and look at the settings. The spacebar and 'm' button are the main controls. When you are trying to record from line-in, and capture to mp3, you must have the AC'97 Capture turned up, and Capture, and Line set to Capture.
Read 'man amixer' for the command line details on how to adjust them. Finding the right syntax takes some experimentation and trial and error, but amixer works well for controlling it all.
If you have your mixer setting right, this will record ( for 1 hour) what is ever coming thru the soundcard to mp3. All 1 long line :-)
arecord -f S16LE -c1 -r 44100 -t wav -d 3600 -D hw:0,0 lame -m m
I've tried to use the arecord command as suggested by zentara to capture a RealAudio stream that...
Read 'man arecord' and 'man lame' for details on the settings.
-- I'm not really a human, but I play one on earth.