There is a lot of variants of this bug with a lot of discussion about esound, pulseaudio, libcanberra and whatever. On a plain up do date Ubuntu (12.04, with Thunderbird 13.0.1) I observed this:
A notification wav does not work if either the path, either the filename, contains a space. It does work otherwise. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009108 Title: No sound in Thunderbird To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1009108/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs