I tried to change the input plugin as escribed here from the default one to the direct show one. I configured the mixer in ffdshow with a custom matrix ( as descriped here) and it works with videos and MP3 in other players (WMP or Zoom Player). I wish to play back stereo MP3s in 7.1 (pseudo) surround sound via Winamp.
I want to revive this thread because I have the same problems and wishes.
