WebCam Monitor can record audio from a microphone. You may need to raise the audio levels for your microphone. If you are using Windows Vista, right-click the speaker icon in the System Tray and choose "Recording Devices". Double-click the appropriate device in the list and switch to the Levels tab. Try raising both the recording level and the microphone boost. You may also need to raise the volume on Windows Media Player when playing back the recordings. This should solve the problem.