The bug is due to missing mp3 decoder plugins https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/1672035 comment #6 for details on how to get it working.
** Tags added: missing-plugins -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1570231 Title: Rhythmbox does not play music in 16.04 beta To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/1570231/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
