I am using ubuntu 10.10 maverick 64-bit, and I have the same problem. I've tried today to "apt-get purge openoffice*", and then install libreoffice from ppa. The sound still does not work.
Paquet : libreoffice Version : 1:3.3.0~rc2-3maverick1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/680560 Title: openoffice Impress won't play sound in .ppt files in Maverick -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs