Simply install the application and run the application from the shortcut. Afterwards, on the main screen, at first, specify recording input device i.e. the device from which audio will be recorded.
Also, specify various audio recording properties such as sample rate, stereo or mono, volume e.t.c.
Check the option "Show countdown" to show a countdown before recording starts.
Check the option "Maximum recording time" and specify a duration for the recording, if you want to limit the recording to a specific duration.
Moreover, you can specify the output filename or leave the automatically generated filename.
To start recording press on the "Record" button or press F9.
To pause recording press on the "Pause" button or press F9.
To stop recording press on the "Stop" button or press F10.
To play the recording for preview press on the "Play" button or F11.
Finally, once you have recorded the audio press on the "OK" button to finalize recording and exit application.