And it's a good idea to Export your original show as WAV (Microsoft) for a backup before you try any of these tricks. Save the sound file under a separate name somewhere safe.
There's just nothing like having a computer problem that takes the only copy of your show straight into the mud.
It's a very common New User mistake to force Audacity to write corrections on top of the old files. One mistake anywhere and the show is trash.
If you don't have a backup, you'll be performing it again.
Audacity Podcaster Forum.