I think you're right about conflicting packages. I had the -fluendo-mpegdemux package installed, but not the -fluendo-mp3 one. When I installed fluendo-mp3 it worked, when I removed BOTH it worked, with one and not the other it was broken.
>From my apt history Removed the following packages: gstreamer0.10-fluendo-mp3 gstreamer0.10-fluendo-mpegdemux Now it works nicely -- Won't play mp3s unless crossfading is turned on or fluendo mp3 plugin installed https://bugs.launchpad.net/bugs/330221 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs