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[David Stenglein <525883@xxxxxxxxxxxxxxxxxx>]

This still doesn't work for me in 10.04, even after I stopped using "the
wrong path in the local config file", which is a drastic
oversimplification of my bug report.

I either get no audio, or an NPE and no audio.

However, an strace shows that libpulse-java.so is now getting loaded
from the correct location so things may be working properly and
something else is wrong with my particular system configuration.

After numerous technical difficulties, we've stopped using webex, so I
don't have any desire to pursue this.

-- 
Java applet audio with pulseaudio broken (local apps likely broken)
https://bugs.launchpad.net/bugs/525883
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Status in “openjdk-6” package in Ubuntu: Invalid

Bug description:
Binary package hint: openjdk-6-jre

Problem: No audio output from applets in firefox using pulseaudio.


charm% lsb_release -rd
Description:    Ubuntu 9.10
Release:        9.10

This bug is in a combination of packages:
 - openjdk-6-jre 6b16-1.6.1-3ubuntu1
 - openjdk-6-jre-lib 6b16-1.6.1-3ubuntu1
 - icedtea6-plugin 6b16-1.6.1-3ubuntu1

Examples:
  - Webex meetings
  - http://www.javazoom.net/applets/tinyplayer/tinyplayer.html

Doing some investigation, I found two things:

 - There is a security policy problem for applets using sound
 - There is a packaging problem with the location of the native pulse library for java

Working backwards using java stacktraces on stderr, I found the following permissions 
were necessary to get audio output from java:

$ cat .java.policy
grant {
  permission java.lang.RuntimePermission 
        "loadLibrary.pulse-java";
  permission java.io.FilePermission 
        "/usr/lib/jvm/java-6-openjdk/jre/lib/ext/i386/libpulse-java.so", "read";
};

Then, I found that the .so file didn't actually exist! Instead, it's in a different directory:

$ dpkg -L openjdk-6-jre | grep pulse
/usr/lib/jvm/java-6-openjdk/jre/lib/i386/libpulse-java.so

Making a symbolic link fixed everything and made it work:

$ ls -l /usr/lib/jvm/java-6-openjdk/jre/lib/ext/i386
lrwxrwxrwx 1 root root 7 2010-02-22 11:19 /usr/lib/jvm/java-6-openjdk/jre/lib/ext/i386 -> ../i386

I can't say how the policies should be managed for applets, but even regular java programs aren't likely to work until the packaging is fixed.

-Dave