Okay, I have an M-Audio Delta 44 soundcard. The problem is this: simply running Alsa, I can't hear the stuff I have running into one of the card's inputs at the same time as I'm listening to something generated by the computer. Say, for instance, I have a guitar plugged into it and am also playing an audio track with Audacity. The only way I can hear the guitar is to go into either Kmix or Envy24control and change one of the output channels from PCM out to h/w0. Then I can hear the guitar, but can only hear one channel of the audio output! This is not a workable solution. Someone suggested installing Pulseaudio to manage the audio stream. I've done that, and have pulseaudio playing nice with my system, but I don't know how to use it to get what I'm looking for. Can anyone help?