Sample Project Reportsthin Client How Do I Get Audacity To Stop Saying Please Check The Input Device Settings And The Project Sample Rate?

How do I get Audacity to stop saying please check the input device settings and the project sample rate? - sample project reportsthin client

I'm trying to understand a song in Audacity, but if I try to burn a little pop up comes and says: "Error opening audio device. Please check the settings for the input and sampling rate of the project." How I can connect the microphone and speaker, so this does not happen?