With AudioSpin Media Recorder 1.09.042 you have an excellent sound recorder. Its technique is based on recording the sound from the player that is playing, in other words, internally from Windows Media Player (version 9 or later), WinAmp, RealPlayer, Quicktime, etc, letting you extract the audio from what you are hearing or seeing.
Thus you can obtain the audio with the same quality as the original, whether movie, music, Internet web sounds (like Flash games), Internet radios, etc.
It comes equipped with audio optimization tools in case any recording has interference (ie from radio). It also has a complete ID3 tag editor (some of which can be automatically filled from the Internet).