!7

import javax.sound.sampled.*;

p {
  Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
 
  for (int i = 0; i < mixerInfo.length; i++) {
    print("Found device: " + quote(mixerInfo[i].getName()));
    Mixer mixer = AudioSystem.getMixer(mixerInfo[i]);
    for (Line.Info thisLineInfo : mixer.getSourceLineInfo()) {
      print("  Source line: " + thisLineInfo);
      print("  Line class: " + thisLineInfo.getLineClass());
    }
    for (Line.Info thisLineInfo : mixer.getTargetLineInfo()) {
      print("  Target line: " + thisLineInfo);
      print("  Line class: " + thisLineInfo.getLineClass());
    }
  }
}

Began life as a copy of #1003204