Since I didn't see it spelled out here, none of the tricks listed above worked for me. But simply turning off "Enable software sound mixing" in the Sound tab of the Sound Properties did the trick for me and is a simple workaround.
-- [Hardy] audacity fails to playback a sound file due to no device https://bugs.launchpad.net/bugs/202791 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