What software application can capture sounds or music from other software such as games?

I want to capture music from a game, but most audio/video capture software only captures sound from mic? What software (especially freeware) that capture music and sounds from any application are available on the net? Thanks for anyone who helpsWhat software application can capture sounds or music from other software such as games?quite often the music or sounds are stored as audio files in the games' folder possibly .wav, .mp3, .ogg or similar