Measuring Sound

I've seen many source code examples of implementing a VU, or Graphic equalizer into an audio application. These VUs and EQs can measure any sound source that uses a wave mapper. Windows uses a wave mapper for its system sound effects. Windows Media Player doesn‘t, but the popular program Win Amp does. How would I implement a wave mapper into my API driven MP3 Player? I've already got a working Graphic equalizer, it measures system sounds, and it even kicks in when I open WinAmp. I just want it to be able to recognize the sound stream from MY program.

Do I understand you to say you are able to read the system's audio stream and use it in your application? How do you do this?

Thanks,

TheLeeMan

Try opening device number -1.