At mixer window you can select recording source.

• If you would like to record from microphone, please select "Microphone"
• If you would like to record from external audio sources - turntable, Walkman, tape player, DVD, etc., please select "Line-In"
• If you would like to record from your sound card - streaming internet audio, winamp, realplayer, please select the stereo mixer which might appear as "Stereo Mix", "What U hear", "Output", "Mixer", "Wave".