[LAD] need help with Java audio problem

Greetings, I'm writing an article about Java sound applications, and I've run into a problem. HighC, FScape, and jein all demonstrate the problem: They appear to be working as they should, but there's no audio output. According to HighC's author, he uses only the recommended class for audio output. I quote from our correspondence : "All I do is call javax.sound.sampled.AudioSystem.getLine() with the default settings. It should work as is, that's what the Java spec says. Perhaps the Java configuration files allow setting the default audio device on Linux?" So, what is the default audio device for Java 1.6 on Linux ? Is it configurable ? If so, where do I find it and how do I set it ? (Btw, I have the Sun SDK). I also have HighC installed under Wine, along with the JRE 1.6 for Windows. HighC works as expected there. I could not test jein under Wine, it requires javac, which is not included in the JRE. Any and all suggestions are most welcome, I'm totally clueless when it comes to debugging Java. Best, dp