The "Wave Out Mix" / "Stereo Mix" / "Record What you hear" feature allows you to record from your sound card anything that you hear.

The main reason of "Wave Out Mix" / "Stereo Mix" / "Record What you hear" being disabled in many newer sound cards is to prevent users from recording music especially the DRM protected one.

Where can you use "Wave Out Mix" / "Stereo Mix" / "Record What you hear":

• Record your voice with background music. Sound card can mix voice from a Mic and music together.
• Record DRM-protected music as MP3, WMA, WAV,... files.
• Record online music from social music services and radio stations
• Record the audio part when recording video from screen
• Record sound tracks from games
• Record Skype and VoIP calls.

Any other suggestions?