That's a codec issue. Mepis probably comes with nonfree codecs out of the box.
** Changed in: kaffeine (Ubuntu) Status: Needs Info => Rejected -- No sound from Kaffeine on Ububtu 6-0-6 https://launchpad.net/bugs/49699 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs