How can I hear CGoban sound when I have music running on my Linux system?
Turn down the music! O.K. – other solution: On some systems, Java requires all the sound resource of the computer to produce sound. So, if you are listening to music before launching CGoban, you won’t be able to hear the stones sound or the teacher voices. You can force Java to use ALSA with the program aoss. If aoss is not already installed on your system, look for the package alsa-oss and install it (for instance, on debian/ubuntu, type the command apt-get install alsa-oss).