Audacity version 2.0.5 on windows 7(64). No previous problem with audacity, mic, sound all work normally on the computer. Tried recording on audacity this a.m. for the first time in a few months, and got no sound on playback. Thought my version might be out of date so I downloaded the latest one. Still zero sound on playback. There is no muting of either audacity or the computer sound system. I obtained the latest version through the .exe installer
The only thing I can think of is that recently I had other software on the system to record my skype interviews, but I didn’t like it so I uninstalled it. If there is a bit somewhere left behind I wouldn’t know how to track it down. Not sure if this was the issue or not.